157199659 has 4 divisors (see below), whose sum is σ = 159864120. Its totient is φ = 154535200.

The previous prime is 157199639. The next prime is 157199683. The reversal of 157199659 is 956991751.

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

It is a cyclic number.

It is not a de Polignac number, because 157199659 - 2¹³ = 157191467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157199639) 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, 1332142 + ... + 1332259.

It is an arithmetic number, because the mean of its divisors is an integer number (39966030).

Almost surely, 2^157199659 is an apocalyptic number.

157199659 is a deficient number, since it is larger than the sum of its proper divisors (2664461).

157199659 is an equidigital number, since it uses as much as digits as its factorization.

157199659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664460.

The product of its digits is 765450, while the sum is 52.

The square root of 157199659 is about 12537.9288161961. The cubic root of 157199659 is about 539.6976576841.

The spelling of 157199659 in words is "one hundred fifty-seven million, one hundred ninety-nine thousand, six hundred fifty-nine".