157696481 has 4 divisors (see below), whose sum is σ = 157796100. Its totient is φ = 157596864.

The previous prime is 157696477. The next prime is 157696501. The reversal of 157696481 is 184696751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108472225 + 49224256 = 10415^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 157696481 - 2² = 157696477 is a prime.

It is a super-2 number, since 2×157696481² = 49736360239566722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157696681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47396 + ... + 50613.

It is an arithmetic number, because the mean of its divisors is an integer number (39449025).

Almost surely, 2^157696481 is an apocalyptic number.

It is an amenable number.

157696481 is a deficient number, since it is larger than the sum of its proper divisors (99619).

157696481 is an equidigital number, since it uses as much as digits as its factorization.

157696481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99618.

The product of its digits is 362880, while the sum is 47.

The square root of 157696481 is about 12557.7259485944. The cubic root of 157696481 is about 540.2656226355.

The spelling of 157696481 in words is "one hundred fifty-seven million, six hundred ninety-six thousand, four hundred eighty-one".