158561137 has 16 divisors (see below), whose sum is σ = 193177600. Its totient is φ = 127118160.

The previous prime is 158561131. The next prime is 158561141. The reversal of 158561137 is 731165851.

It is a cyclic number.

It is not a de Polignac number, because 158561137 - 2³ = 158561129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158561096 and 158561105.

It is not an unprimeable number, because it can be changed into a prime (158561131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2962 + ... + 18052.

It is an arithmetic number, because the mean of its divisors is an integer number (12073600).

Almost surely, 2^158561137 is an apocalyptic number.

It is an amenable number.

158561137 is a deficient number, since it is larger than the sum of its proper divisors (34616463).

158561137 is a wasteful number, since it uses less digits than its factorization.

158561137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15196.

The product of its digits is 25200, while the sum is 37.

The square root of 158561137 is about 12592.1061383710. The cubic root of 158561137 is about 541.2512559463.

The spelling of 158561137 in words is "one hundred fifty-eight million, five hundred sixty-one thousand, one hundred thirty-seven".