55408456 has 8 divisors (see below), whose sum is σ = 103890870. Its totient is φ = 27704224.

The previous prime is 55408453. The next prime is 55408459. The reversal of 55408456 is 65480455.

It is an interprime number because it is at equal distance from previous prime (55408453) and next prime (55408459).

It can be written as a sum of positive squares in only one way, i.e., 38019556 + 17388900 = 6166^2 + 4170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55408453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3463021 + ... + 3463036.

Almost surely, 2^55408456 is an apocalyptic number.

It is an amenable number.

55408456 is a deficient number, since it is larger than the sum of its proper divisors (48482414).

55408456 is a wasteful number, since it uses less digits than its factorization.

55408456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926063 (or 6926059 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 55408456 is about 7443.6856462374. The cubic root of 55408456 is about 381.2343425980.

The spelling of 55408456 in words is "fifty-five million, four hundred eight thousand, four hundred fifty-six".