87240550 has 24 divisors (see below), whose sum is σ = 166045176. Its totient is φ = 34083840.

The previous prime is 87240547. The next prime is 87240551. The reversal of 87240550 is 5504278.

It is a super-2 number, since 2×87240550² = 15221827128605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87240551) 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, 18139 + ... + 22438.

It is an arithmetic number, because the mean of its divisors is an integer number (6918549).

Almost surely, 2^87240550 is an apocalyptic number.

87240550 is a deficient number, since it is larger than the sum of its proper divisors (78804626).

87240550 is a wasteful number, since it uses less digits than its factorization.

87240550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40632 (or 40627 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 87240550 is about 9340.2649855344. The cubic root of 87240550 is about 443.5127727587.

The spelling of 87240550 in words is "eighty-seven million, two hundred forty thousand, five hundred fifty".