156131601 has 8 divisors (see below), whose sum is σ = 213801984. Its totient is φ = 101274480.

The previous prime is 156131561. The next prime is 156131629. The reversal of 156131601 is 106131651.

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

It is not a de Polignac number, because 156131601 - 2¹⁴ = 156115217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156131681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703185 + ... + 703406.

It is an arithmetic number, because the mean of its divisors is an integer number (26725248).

Almost surely, 2^156131601 is an apocalyptic number.

It is an amenable number.

156131601 is a deficient number, since it is larger than the sum of its proper divisors (57670383).

156131601 is a wasteful number, since it uses less digits than its factorization.

156131601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406631.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 156131601 is about 12495.2631424872. The cubic root of 156131601 is about 538.4725939106.

The spelling of 156131601 in words is "one hundred fifty-six million, one hundred thirty-one thousand, six hundred one".