156099401 has 4 divisors (see below), whose sum is σ = 156184704. Its totient is φ = 156014100.

The previous prime is 156099397. The next prime is 156099407. The reversal of 156099401 is 104990651.

156099401 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 156099401 - 2² = 156099397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156099407) 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, 39845 + ... + 43586.

It is an arithmetic number, because the mean of its divisors is an integer number (39046176).

Almost surely, 2^156099401 is an apocalyptic number.

It is an amenable number.

156099401 is a deficient number, since it is larger than the sum of its proper divisors (85303).

156099401 is an equidigital number, since it uses as much as digits as its factorization.

156099401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85302.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 156099401 is about 12493.9745877763. The cubic root of 156099401 is about 538.4355738380.

The spelling of 156099401 in words is "one hundred fifty-six million, ninety-nine thousand, four hundred one".