157215701 has 8 divisors (see below), whose sum is σ = 163877280. Its totient is φ = 150681168.

The previous prime is 157215683. The next prime is 157215703. The reversal of 157215701 is 107512751.

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

It is not a de Polignac number, because 157215701 - 2¹⁰ = 157214677 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 (157215703) 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, 29231 + ... + 34188.

It is an arithmetic number, because the mean of its divisors is an integer number (20484660).

Almost surely, 2^157215701 is an apocalyptic number.

It is an amenable number.

157215701 is a deficient number, since it is larger than the sum of its proper divisors (6661579).

157215701 is an equidigital number, since it uses as much as digits as its factorization.

157215701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63523.

The product of its (nonzero) digits is 2450, while the sum is 29.

The square root of 157215701 is about 12538.5685387129. The cubic root of 157215701 is about 539.7160155172.

The spelling of 157215701 in words is "one hundred fifty-seven million, two hundred fifteen thousand, seven hundred one".