55398456 has 24 divisors (see below), whose sum is σ = 150037680. Its totient is φ = 18466128.

The previous prime is 55398449. The next prime is 55398493. The reversal of 55398456 is 65489355.

55398456 is a `hidden beast` number, since 553 + 98 + 4 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 384640 + ... + 384783.

It is an arithmetic number, because the mean of its divisors is an integer number (6251570).

Almost surely, 2^55398456 is an apocalyptic number.

It is an amenable number.

55398456 is an abundant number, since it is smaller than the sum of its proper divisors (94639224).

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

55398456 is a wasteful number, since it uses less digits than its factorization.

55398456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769435 (or 769428 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 55398456 is about 7443.0139056702. The cubic root of 55398456 is about 381.2114064311.

The spelling of 55398456 in words is "fifty-five million, three hundred ninety-eight thousand, four hundred fifty-six".