87059491 has 4 divisors (see below), whose sum is σ = 87210952. Its totient is φ = 86908032.

The previous prime is 87059471. The next prime is 87059507. The reversal of 87059491 is 19495078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87059491 - 2⁵ = 87059459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87059471) 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 in 3 ways as a sum of consecutive naturals, for example, 74865 + ... + 76018.

It is an arithmetic number, because the mean of its divisors is an integer number (21802738).

Almost surely, 2^87059491 is an apocalyptic number.

87059491 is a deficient number, since it is larger than the sum of its proper divisors (151461).

87059491 is a wasteful number, since it uses less digits than its factorization.

87059491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151460.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 87059491 is about 9330.5675604435. The cubic root of 87059491 is about 443.2057381815.

The spelling of 87059491 in words is "eighty-seven million, fifty-nine thousand, four hundred ninety-one".