55506456 has 48 divisors (see below), whose sum is σ = 154004760. Its totient is φ = 18049920.

The previous prime is 55506449. The next prime is 55506457. The reversal of 55506456 is 65460555.

It is a happy number.

55506456 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 645 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55506456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6450 + ... + 12353.

Almost surely, 2^55506456 is an apocalyptic number.

It is an amenable number.

55506456 is an abundant number, since it is smaller than the sum of its proper divisors (98498304).

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

55506456 is a wasteful number, since it uses less digits than its factorization.

55506456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18856 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 55506456 is about 7450.2654986249. The cubic root of 55506456 is about 381.4589711314.

The spelling of 55506456 in words is "fifty-five million, five hundred six thousand, four hundred fifty-six".