87538831 has 8 divisors (see below), whose sum is σ = 94260240. Its totient is φ = 80992128.

The previous prime is 87538819. The next prime is 87538853. The reversal of 87538831 is 13883578.

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 87538831 - 2¹⁵ = 87506063 is a prime.

It is a super-2 number, since 2×87538831² = 15326093865693122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87538861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42636 + ... + 44641.

It is an arithmetic number, because the mean of its divisors is an integer number (11782530).

Almost surely, 2^87538831 is an apocalyptic number.

87538831 is a deficient number, since it is larger than the sum of its proper divisors (6721409).

87538831 is a wasteful number, since it uses less digits than its factorization.

87538831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87353.

The product of its digits is 161280, while the sum is 43.

The square root of 87538831 is about 9356.2188409635. The cubic root of 87538831 is about 444.0176639213.

The spelling of 87538831 in words is "eighty-seven million, five hundred thirty-eight thousand, eight hundred thirty-one".