87731053 has 8 divisors (see below), whose sum is σ = 90014400. Its totient is φ = 85474368.

The previous prime is 87731041. The next prime is 87731071. The reversal of 87731053 is 35013778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87731053 - 2²¹ = 85633901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87731153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (11251800).

Almost surely, 2^87731053 is an apocalyptic number.

It is an amenable number.

87731053 is a deficient number, since it is larger than the sum of its proper divisors (2283347).

87731053 is a wasteful number, since it uses less digits than its factorization.

87731053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13331.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 87731053 is about 9366.4856269574. The cubic root of 87731053 is about 444.3424248176.

The spelling of 87731053 in words is "eighty-seven million, seven hundred thirty-one thousand, fifty-three".