87551424 has 84 divisors (see below), whose sum is σ = 253699264. Its totient is φ = 28864512.

The previous prime is 87551423. The next prime is 87551437. The reversal of 87551424 is 42415578.

87551424 is a `hidden beast` number, since 87 + 551 + 4 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87551423) 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, 55089 + ... + 56655.

Almost surely, 2^87551424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87551424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126849632).

87551424 is an abundant number, since it is smaller than the sum of its proper divisors (166147840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87551424 is a wasteful number, since it uses less digits than its factorization.

87551424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1669 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 87551424 is about 9356.8917916154. The cubic root of 87551424 is about 444.0389544590.

The spelling of 87551424 in words is "eighty-seven million, five hundred fifty-one thousand, four hundred twenty-four".