157212579 has 4 divisors (see below), whose sum is σ = 209616776. Its totient is φ = 104808384.

The previous prime is 157212577. The next prime is 157212599. The reversal of 157212579 is 975212751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975212751 = 3 ⋅325070917.

It is not a de Polignac number, because 157212579 - 2¹ = 157212577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157212577) 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, 26202094 + ... + 26202099.

It is an arithmetic number, because the mean of its divisors is an integer number (52404194).

Almost surely, 2^157212579 is an apocalyptic number.

157212579 is a deficient number, since it is larger than the sum of its proper divisors (52404197).

157212579 is an equidigital number, since it uses as much as digits as its factorization.

157212579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52404196.

The product of its digits is 44100, while the sum is 39.

The square root of 157212579 is about 12538.4440422247. Note that the first 3 decimals coincide. The cubic root of 157212579 is about 539.7124429212.

The spelling of 157212579 in words is "one hundred fifty-seven million, two hundred twelve thousand, five hundred seventy-nine".