156356401 has 4 divisors (see below), whose sum is σ = 156381552. Its totient is φ = 156331252.

The previous prime is 156356363. The next prime is 156356419. The reversal of 156356401 is 104653651.

156356401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 156356401 - 2¹³ = 156348209 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156353401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4290 + ... + 18196.

It is an arithmetic number, because the mean of its divisors is an integer number (39095388).

Almost surely, 2^156356401 is an apocalyptic number.

It is an amenable number.

156356401 is a deficient number, since it is larger than the sum of its proper divisors (25151).

156356401 is a wasteful number, since it uses less digits than its factorization.

156356401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25150.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 156356401 is about 12504.2553156915. The cubic root of 156356401 is about 538.7309029035.

The spelling of 156356401 in words is "one hundred fifty-six million, three hundred fifty-six thousand, four hundred one".