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153030251 = 11101181761
BaseRepresentation
bin10010001111100…
…00111001101011
3101122221202001002
421013300321223
5303133432001
623103545215
73535510223
oct1107607153
9348852032
10153030251
1179421990
12432bb20b
132592025a
1416477083
15d67c46b
hex91f0e6b

153030251 has 16 divisors (see below), whose sum is σ = 169749216. Its totient is φ = 136800000.

The previous prime is 153030221. The next prime is 153030253. The reversal of 153030251 is 152030351.

It is a cyclic number.

It is not a de Polignac number, because 153030251 - 226 = 85921387 is a prime.

It is a super-2 number, since 2×1530302512 = 46836515442246002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153030253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200711 + ... + 201471.

It is an arithmetic number, because the mean of its divisors is an integer number (10609326).

Almost surely, 2153030251 is an apocalyptic number.

153030251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

153030251 is a deficient number, since it is larger than the sum of its proper divisors (16718965).

153030251 is a wasteful number, since it uses less digits than its factorization.

153030251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 153030251 is about 12370.5396406139. The cubic root of 153030251 is about 534.8833716716.

The spelling of 153030251 in words is "one hundred fifty-three million, thirty thousand, two hundred fifty-one".

Divisors: 1 11 101 181 761 1111 1991 8371 18281 76861 137741 201091 845471 1515151 13911841 153030251