87937591 has 4 divisors (see below), whose sum is σ = 100500112. Its totient is φ = 75375072.

The previous prime is 87937571. The next prime is 87937601. The reversal of 87937591 is 19573978.

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 87937591 - 2⁷ = 87937463 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 (87937511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6281250 + ... + 6281263.

It is an arithmetic number, because the mean of its divisors is an integer number (25125028).

Almost surely, 2^87937591 is an apocalyptic number.

87937591 is a deficient number, since it is larger than the sum of its proper divisors (12562521).

87937591 is a wasteful number, since it uses less digits than its factorization.

87937591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562520.

The product of its digits is 476280, while the sum is 49.

The square root of 87937591 is about 9377.5045187939. The cubic root of 87937591 is about 444.6908444794.

It can be divided in two parts, 8793 and 7591, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 87937591 in words is "eighty-seven million, nine hundred thirty-seven thousand, five hundred ninety-one".