152521255535551 has 12 divisors (see below), whose sum is σ = 177784034702760. Its totient is φ = 130466247077040.

The previous prime is 152521255535543. The next prime is 152521255535569. The reversal of 152521255535551 is 155535552125251.

It is not a de Polignac number, because 152521255535551 - 2³ = 152521255535543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152521255535851) 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, 3169709836 + ... + 3169757953.

It is an arithmetic number, because the mean of its divisors is an integer number (14815336225230).

Almost surely, 2^{152521255535551} is an apocalyptic number.

152521255535551 is a deficient number, since it is larger than the sum of its proper divisors (25262779167209).

152521255535551 is an equidigital number, since it uses as much as digits as its factorization.

152521255535551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339468294 (or 6339468287 counting only the distinct ones).

The product of its digits is 9375000, while the sum is 52.

The spelling of 152521255535551 in words is "one hundred fifty-two trillion, five hundred twenty-one billion, two hundred fifty-five million, five hundred thirty-five thousand, five hundred fifty-one".