157563631 has 8 divisors (see below), whose sum is σ = 160143984. Its totient is φ = 154999680.

The previous prime is 157563629. The next prime is 157563643. The reversal of 157563631 is 136365751.

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

It is a cyclic number.

It is not a de Polignac number, because 157563631 - 2¹ = 157563629 is a prime.

It is a super-2 number, since 2×157563631² = 49652595627808322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157563611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16065 + ... + 23941.

It is an arithmetic number, because the mean of its divisors is an integer number (20017998).

Almost surely, 2^157563631 is an apocalyptic number.

157563631 is a deficient number, since it is larger than the sum of its proper divisors (2580353).

157563631 is an equidigital number, since it uses as much as digits as its factorization.

157563631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201.

The product of its digits is 56700, while the sum is 37.

The square root of 157563631 is about 12552.4352617331. The cubic root of 157563631 is about 540.1138660202.

The spelling of 157563631 in words is "one hundred fifty-seven million, five hundred sixty-three thousand, six hundred thirty-one".