156137161 has 4 divisors (see below), whose sum is σ = 156587472. Its totient is φ = 155686852.

The previous prime is 156137123. The next prime is 156137167. The reversal of 156137161 is 161731651.

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 156137161 - 2⁹ = 156136649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156137167) 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, 224635 + ... + 225328.

It is an arithmetic number, because the mean of its divisors is an integer number (39146868).

Almost surely, 2^156137161 is an apocalyptic number.

It is an amenable number.

156137161 is a deficient number, since it is larger than the sum of its proper divisors (450311).

156137161 is an equidigital number, since it uses as much as digits as its factorization.

156137161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450310.

The product of its digits is 3780, while the sum is 31.

The square root of 156137161 is about 12495.4856248167. The cubic root of 156137161 is about 538.4789856811.

The spelling of 156137161 in words is "one hundred fifty-six million, one hundred thirty-seven thousand, one hundred sixty-one".