87056523 has 12 divisors (see below), whose sum is σ = 129147408. Its totient is φ = 56468880.

The previous prime is 87056509. The next prime is 87056531. The reversal of 87056523 is 32565078.

87056523 is a `hidden beast` number, since 8 + 70 + 565 + 23 = 666.

It is not a de Polignac number, because 87056523 - 2¹³ = 87048331 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (87056573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130383 + ... + 131048.

It is an arithmetic number, because the mean of its divisors is an integer number (10762284).

Almost surely, 2^87056523 is an apocalyptic number.

87056523 is a deficient number, since it is larger than the sum of its proper divisors (42090885).

87056523 is a wasteful number, since it uses less digits than its factorization.

87056523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261474 (or 261471 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 87056523 is about 9330.4085119570. The cubic root of 87056523 is about 443.2007015888.

The spelling of 87056523 in words is "eighty-seven million, fifty-six thousand, five hundred twenty-three".