115020531 has 24 divisors (see below), whose sum is σ = 171544464. Its totient is φ = 74208960.

The previous prime is 115020511. The next prime is 115020557. The reversal of 115020531 is 135020511.

115020531 is a `hidden beast` number, since 115 + 0 + 20 + 531 = 666.

It is not a de Polignac number, because 115020531 - 2⁷ = 115020403 is a prime.

It is a super-2 number, since 2×115020531² = 26459445103043922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115020511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69445 + ... + 71081.

It is an arithmetic number, because the mean of its divisors is an integer number (7147686).

Almost surely, 2^115020531 is an apocalyptic number.

115020531 is a deficient number, since it is larger than the sum of its proper divisors (56523933).

115020531 is a wasteful number, since it uses less digits than its factorization.

115020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 115020531 is about 10724.7625148532. The cubic root of 115020531 is about 486.3233508384.

The spelling of 115020531 in words is "one hundred fifteen million, twenty thousand, five hundred thirty-one".