157970 has 8 divisors (see below), whose sum is σ = 284364. Its totient is φ = 63184.

The previous prime is 157951. The next prime is 157991. The reversal of 157970 is 79751.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 361 = 397^2 + 19^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7889 + ... + 7908.

2¹⁵⁷⁹⁷⁰ is an apocalyptic number.

157970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157970 is a deficient number, since it is larger than the sum of its proper divisors (126394).

157970 is a wasteful number, since it uses less digits than its factorization.

157970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15804.

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 157970 is about 397.4543999002. The cubic root of 157970 is about 54.0577799459.

The spelling of 157970 in words is "one hundred fifty-seven thousand, nine hundred seventy".