157215357 has 16 divisors (see below), whose sum is σ = 250828480. Its totient is φ = 96747696.

The previous prime is 157215343. The next prime is 157215379. The reversal of 157215357 is 753512751.

It is a happy number.

It is not a de Polignac number, because 157215357 - 2¹⁸ = 156953213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157211357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223603 + ... + 224304.

It is an arithmetic number, because the mean of its divisors is an integer number (15676780).

Almost surely, 2^157215357 is an apocalyptic number.

It is an amenable number.

157215357 is a deficient number, since it is larger than the sum of its proper divisors (93613123).

157215357 is a wasteful number, since it uses less digits than its factorization.

157215357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447929 (or 447923 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 157215357 is about 12538.5548210310. The cubic root of 157215357 is about 539.7156218703.

The spelling of 157215357 in words is "one hundred fifty-seven million, two hundred fifteen thousand, three hundred fifty-seven".