87554820 has 48 divisors (see below), whose sum is σ = 249318720. Its totient is φ = 22951296.

The previous prime is 87554809. The next prime is 87554821. The reversal of 87554820 is 2845578.

It is not an unprimeable number, because it can be changed into a prime (87554821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8827 + ... + 15906.

It is an arithmetic number, because the mean of its divisors is an integer number (5194140).

Almost surely, 2^87554820 is an apocalyptic number.

It is an amenable number.

87554820 is an abundant number, since it is smaller than the sum of its proper divisors (161763900).

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

87554820 is a wasteful number, since it uses less digits than its factorization.

87554820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24804 (or 24802 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 87554820 is about 9357.0732603737. The cubic root of 87554820 is about 444.0446956060.

The spelling of 87554820 in words is "eighty-seven million, five hundred fifty-four thousand, eight hundred twenty".