87080531 has 2 divisors, whose sum is σ = 87080532. Its totient is φ = 87080530.

The previous prime is 87080527. The next prime is 87080549. The reversal of 87080531 is 13508078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87080531 - 2² = 87080527 is a prime.

It is a super-2 number, since 2×87080531² = 15166037758483922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87080551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43540265 + 43540266.

It is an arithmetic number, because the mean of its divisors is an integer number (43540266).

Almost surely, 2^87080531 is an apocalyptic number.

87080531 is a deficient number, since it is larger than the sum of its proper divisors (1).

87080531 is an equidigital number, since it uses as much as digits as its factorization.

87080531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 87080531 is about 9331.6949692968. The cubic root of 87080531 is about 443.2414390473.

The spelling of 87080531 in words is "eighty-seven million, eighty thousand, five hundred thirty-one".