87455553 has 4 divisors (see below), whose sum is σ = 116607408. Its totient is φ = 58303700.

The previous prime is 87455551. The next prime is 87455573. The reversal of 87455553 is 35555478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87455553 - 2¹ = 87455551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87455551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14575923 + ... + 14575928.

It is an arithmetic number, because the mean of its divisors is an integer number (29151852).

Almost surely, 2^87455553 is an apocalyptic number.

It is an amenable number.

87455553 is a deficient number, since it is larger than the sum of its proper divisors (29151855).

87455553 is a wasteful number, since it uses less digits than its factorization.

87455553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29151854.

The product of its digits is 420000, while the sum is 42.

The square root of 87455553 is about 9351.7673730691. The cubic root of 87455553 is about 443.8768173412.

The spelling of 87455553 in words is "eighty-seven million, four hundred fifty-five thousand, five hundred fifty-three".