87042583 has 2 divisors, whose sum is σ = 87042584. Its totient is φ = 87042582.

The previous prime is 87042551. The next prime is 87042617. The reversal of 87042583 is 38524078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87042583 - 2⁵ = 87042551 is a prime.

It is a super-2 number, since 2×87042583² = 15152822510623778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87042383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43521291 + 43521292.

It is an arithmetic number, because the mean of its divisors is an integer number (43521292).

Almost surely, 2^87042583 is an apocalyptic number.

87042583 is a deficient number, since it is larger than the sum of its proper divisors (1).

87042583 is an equidigital number, since it uses as much as digits as its factorization.

87042583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 87042583 is about 9329.6614622397. The cubic root of 87042583 is about 443.1770443626.

The spelling of 87042583 in words is "eighty-seven million, forty-two thousand, five hundred eighty-three".