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151238550 = 23521008257
BaseRepresentation
bin10010000001110…
…11011110010110
3101112120201021210
421000323132112
5302204113200
623001322250
73514335501
oct1100733626
9345521253
10151238550
1178408841
1242796386
1325443888
141612c138
15d426650
hex903b796

151238550 has 24 divisors (see below), whose sum is σ = 375071976. Its totient is φ = 40330240.

The previous prime is 151238539. The next prime is 151238551. The reversal of 151238550 is 55832151.

151238550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1512385502 = 45746198012205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151238551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503979 + ... + 504278.

It is an arithmetic number, because the mean of its divisors is an integer number (15627999).

Almost surely, 2151238550 is an apocalyptic number.

151238550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151238550 is an abundant number, since it is smaller than the sum of its proper divisors (223833426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151238550 is a wasteful number, since it uses less digits than its factorization.

151238550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008272 (or 1008267 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 151238550 is about 12297.9083587413. The cubic root of 151238550 is about 532.7876732555.

The spelling of 151238550 in words is "one hundred fifty-one million, two hundred thirty-eight thousand, five hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 1008257 2016514 3024771 5041285 6049542 10082570 15123855 25206425 30247710 50412850 75619275 151238550