87455856 has 20 divisors (see below), whose sum is σ = 225927752. Its totient is φ = 29151936.

The previous prime is 87455839. The next prime is 87455873. The reversal of 87455856 is 65855478.

It is an interprime number because it is at equal distance from previous prime (87455839) and next prime (87455873).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1821997 = 87455856 / (8 + 7 + 4 + 5 + 5 + 8 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 910951 + ... + 911046.

Almost surely, 2^87455856 is an apocalyptic number.

It is an amenable number.

87455856 is an abundant number, since it is smaller than the sum of its proper divisors (138471896).

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

87455856 is a wasteful number, since it uses less digits than its factorization.

87455856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822008 (or 1822002 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 48.

The square root of 87455856 is about 9351.7835732014. The cubic root of 87455856 is about 443.8773299617.

The spelling of 87455856 in words is "eighty-seven million, four hundred fifty-five thousand, eight hundred fifty-six".