157521314 has 8 divisors (see below), whose sum is σ = 237314460. Its totient is φ = 78416496.

The previous prime is 157521311. The next prime is 157521373. The reversal of 157521314 is 413125751.

It can be written as a sum of positive squares in 2 ways, for example, as 155875225 + 1646089 = 12485^2 + 1283^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157521311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171509 + ... + 172424.

Almost surely, 2^157521314 is an apocalyptic number.

157521314 is a deficient number, since it is larger than the sum of its proper divisors (79793146).

157521314 is a wasteful number, since it uses less digits than its factorization.

157521314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344164.

The product of its digits is 4200, while the sum is 29.

The square root of 157521314 is about 12550.7495393701. The cubic root of 157521314 is about 540.0655087422.

The spelling of 157521314 in words is "one hundred fifty-seven million, five hundred twenty-one thousand, three hundred fourteen".