87425550 has 72 divisors (see below), whose sum is σ = 236451384. Its totient is φ = 23158080.

The previous prime is 87425537. The next prime is 87425581. The reversal of 87425550 is 5552478.

It is a happy number.

87425550 is a `hidden beast` number, since 87 + 4 + 25 + 550 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77289 + ... + 78411.

It is an arithmetic number, because the mean of its divisors is an integer number (3284047).

Almost surely, 2^87425550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87425550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118225692).

87425550 is an abundant number, since it is smaller than the sum of its proper divisors (149025834).

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

87425550 is a wasteful number, since it uses less digits than its factorization.

87425550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 87425550 is about 9350.1631001817. The cubic root of 87425550 is about 443.8260518993.

The spelling of 87425550 in words is "eighty-seven million, four hundred twenty-five thousand, five hundred fifty".