157553081 has 6 divisors (see below), whose sum is σ = 183276090. Its totient is φ = 135045456.

The previous prime is 157553063. The next prime is 157553083. The reversal of 157553081 is 180355751.

It can be written as a sum of positive squares in only one way, i.e., 139617856 + 17935225 = 11816^2 + 4235^2 .

It is not a de Polignac number, because 157553081 - 2⁶ = 157553017 is a prime.

It is a super-2 number, since 2×157553081² = 49645946665185122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157553083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1607636 + ... + 1607733.

It is an arithmetic number, because the mean of its divisors is an integer number (30546015).

Almost surely, 2^157553081 is an apocalyptic number.

It is an amenable number.

157553081 is a deficient number, since it is larger than the sum of its proper divisors (25723009).

157553081 is an equidigital number, since it uses as much as digits as its factorization.

157553081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215383 (or 3215376 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 157553081 is about 12552.0150175181. The cubic root of 157553081 is about 540.1018109361.

The spelling of 157553081 in words is "one hundred fifty-seven million, five hundred fifty-three thousand, eighty-one".