157223715 has 32 divisors (see below), whose sum is σ = 275484672. Its totient is φ = 75936000.

The previous prime is 157223687. The next prime is 157223719. The reversal of 157223715 is 517322751.

It is a happy number.

157223715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157223715 - 2⁵ = 157223683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (157223719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44670 + ... + 48060.

It is an arithmetic number, because the mean of its divisors is an integer number (8608896).

Almost surely, 2^157223715 is an apocalyptic number.

157223715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157223715 is a deficient number, since it is larger than the sum of its proper divisors (118260957).

157223715 is a wasteful number, since it uses less digits than its factorization.

157223715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691.

The product of its digits is 14700, while the sum is 33.

The square root of 157223715 is about 12538.8881086004. Note that the first 3 decimals coincide. The cubic root of 157223715 is about 539.7251859555.

The spelling of 157223715 in words is "one hundred fifty-seven million, two hundred twenty-three thousand, seven hundred fifteen".