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155450141 = 7112398447
BaseRepresentation
bin10010100001111…
…11101100011101
3101211111200111122
421100333230131
5304243401031
623231500325
73565206260
oct1120775435
9354450448
10155450141
117a824aa0
12440876a5
1326289842
1416906cd7
15d9a947b
hex943fb1d

155450141 has 16 divisors (see below), whose sum is σ = 194641920. Its totient is φ = 120608880.

The previous prime is 155450137. The next prime is 155450149. The reversal of 155450141 is 141054551.

It is not a de Polignac number, because 155450141 - 22 = 155450137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155450141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155450149) 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, 14180 + ... + 22626.

It is an arithmetic number, because the mean of its divisors is an integer number (12165120).

Almost surely, 2155450141 is an apocalyptic number.

155450141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155450141 is a deficient number, since it is larger than the sum of its proper divisors (39191779).

155450141 is a wasteful number, since it uses less digits than its factorization.

155450141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 155450141 is about 12467.9645892984. The cubic root of 155450141 is about 537.6880363199.

The spelling of 155450141 in words is "one hundred fifty-five million, four hundred fifty thousand, one hundred forty-one".

Divisors: 1 7 11 77 239 1673 2629 8447 18403 59129 92917 650419 2018833 14131831 22207163 155450141