156255121 has 8 divisors (see below), whose sum is σ = 170721504. Its totient is φ = 141832320.

The previous prime is 156255089. The next prime is 156255133. The reversal of 156255121 is 121552651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156255121 - 2⁵ = 156255089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156255121.

It is not an unprimeable number, because it can be changed into a prime (156255521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3151 + ... + 17956.

It is an arithmetic number, because the mean of its divisors is an integer number (21340188).

Almost surely, 2^156255121 is an apocalyptic number.

156255121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156255121 is a deficient number, since it is larger than the sum of its proper divisors (14466383).

156255121 is a wasteful number, since it uses less digits than its factorization.

156255121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21791.

The product of its digits is 3000, while the sum is 28.

The square root of 156255121 is about 12500.2048383217. The cubic root of 156255121 is about 538.6145566357.

The spelling of 156255121 in words is "one hundred fifty-six million, two hundred fifty-five thousand, one hundred twenty-one".