87905554 has 32 divisors (see below), whose sum is σ = 149739840. Its totient is φ = 38337600.

The previous prime is 87905551. The next prime is 87905561. The reversal of 87905554 is 45550978.

It is a self number, because there is not a number n which added to its sum of digits gives 87905554.

It is not an unprimeable number, because it can be changed into a prime (87905551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134292 + ... + 134944.

It is an arithmetic number, because the mean of its divisors is an integer number (4679370).

Almost surely, 2^87905554 is an apocalyptic number.

87905554 is a deficient number, since it is larger than the sum of its proper divisors (61834286).

87905554 is a wasteful number, since it uses less digits than its factorization.

87905554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 87905554 is about 9375.7961795252. The cubic root of 87905554 is about 444.6368353772.

The spelling of 87905554 in words is "eighty-seven million, nine hundred five thousand, five hundred fifty-four".