87451566 has 32 divisors (see below), whose sum is σ = 192119040. Its totient is φ = 26414784.

The previous prime is 87451531. The next prime is 87451571. The reversal of 87451566 is 66515478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14055 + ... + 19298.

It is an arithmetic number, because the mean of its divisors is an integer number (6003720).

Almost surely, 2^87451566 is an apocalyptic number.

87451566 is an abundant number, since it is smaller than the sum of its proper divisors (104667474).

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

87451566 is a wasteful number, since it uses less digits than its factorization.

87451566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400.

The product of its digits is 201600, while the sum is 42.

The square root of 87451566 is about 9351.5542023773. The cubic root of 87451566 is about 443.8700719576.

The spelling of 87451566 in words is "eighty-seven million, four hundred fifty-one thousand, five hundred sixty-six".