87545090 has 16 divisors (see below), whose sum is σ = 158261688. Its totient is φ = 34866816.

The previous prime is 87545089. The next prime is 87545111. The reversal of 87545090 is 9054578.

It can be written as a sum of positive squares in 4 ways, for example, as 78730129 + 8814961 = 8873^2 + 2969^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16457 + ... + 21116.

Almost surely, 2^87545090 is an apocalyptic number.

87545090 is a deficient number, since it is larger than the sum of its proper divisors (70716598).

87545090 is a wasteful number, since it uses less digits than its factorization.

87545090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37813.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 87545090 is about 9356.5533183967. The cubic root of 87545090 is about 444.0282460455.

The spelling of 87545090 in words is "eighty-seven million, five hundred forty-five thousand, ninety".