158492531 has 2 divisors, whose sum is σ = 158492532. Its totient is φ = 158492530.

The previous prime is 158492527. The next prime is 158492639. The reversal of 158492531 is 135294851.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158492531 - 2² = 158492527 is a prime.

It is a super-2 number, since 2×158492531² = 50239764765571922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158492501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79246265 + 79246266.

It is an arithmetic number, because the mean of its divisors is an integer number (79246266).

Almost surely, 2^158492531 is an apocalyptic number.

158492531 is a deficient number, since it is larger than the sum of its proper divisors (1).

158492531 is an equidigital number, since it uses as much as digits as its factorization.

158492531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 158492531 is about 12589.3816766353. The cubic root of 158492531 is about 541.1731820853.

The spelling of 158492531 in words is "one hundred fifty-eight million, four hundred ninety-two thousand, five hundred thirty-one".