87537231 has 6 divisors (see below), whose sum is σ = 126442680. Its totient is φ = 58358148.

The previous prime is 87537221. The next prime is 87537269. The reversal of 87537231 is 13273578.

It is not a de Polignac number, because 87537231 - 2⁹ = 87536719 is a prime.

It is a super-2 number, since 2×87537231² = 15325533622294722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87537221) 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 5 ways as a sum of consecutive naturals, for example, 4863171 + ... + 4863188.

It is an arithmetic number, because the mean of its divisors is an integer number (21073780).

Almost surely, 2^87537231 is an apocalyptic number.

87537231 is a deficient number, since it is larger than the sum of its proper divisors (38905449).

87537231 is a wasteful number, since it uses less digits than its factorization.

87537231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726365 (or 9726362 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 87537231 is about 9356.1333359460. The cubic root of 87537231 is about 444.0149587120.

The spelling of 87537231 in words is "eighty-seven million, five hundred thirty-seven thousand, two hundred thirty-one".