157739131 has 4 divisors (see below), whose sum is σ = 172079064. Its totient is φ = 143399200.

The previous prime is 157739123. The next prime is 157739137. The reversal of 157739131 is 131937751.

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 157739131 - 2³ = 157739123 is a prime.

It is a super-2 number, since 2×157739131² = 49763266897270322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157739137) 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, 7169950 + ... + 7169971.

It is an arithmetic number, because the mean of its divisors is an integer number (43019766).

Almost surely, 2^157739131 is an apocalyptic number.

157739131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157739131 is a deficient number, since it is larger than the sum of its proper divisors (14339933).

157739131 is a wasteful number, since it uses less digits than its factorization.

157739131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14339932.

The product of its digits is 19845, while the sum is 37.

The square root of 157739131 is about 12559.4239915690. The cubic root of 157739131 is about 540.3143243179.

The spelling of 157739131 in words is "one hundred fifty-seven million, seven hundred thirty-nine thousand, one hundred thirty-one".