156032401 has 4 divisors (see below), whose sum is σ = 178322752. Its totient is φ = 133742052.

The previous prime is 156032399. The next prime is 156032413. The reversal of 156032401 is 104230651.

156032401 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.

It is a cyclic number.

It is not a de Polignac number, because 156032401 - 2¹ = 156032399 is a prime.

It is a super-2 number, since 2×156032401² = 48692220323649602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156032491) 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, 11145165 + ... + 11145178.

It is an arithmetic number, because the mean of its divisors is an integer number (44580688).

Almost surely, 2^156032401 is an apocalyptic number.

It is an amenable number.

156032401 is a deficient number, since it is larger than the sum of its proper divisors (22290351).

156032401 is an equidigital number, since it uses as much as digits as its factorization.

156032401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290350.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 156032401 is about 12491.2930075313. The cubic root of 156032401 is about 538.3585281740.

The spelling of 156032401 in words is "one hundred fifty-six million, thirty-two thousand, four hundred one".