55400476 has 12 divisors (see below), whose sum is σ = 98780472. Its totient is φ = 27177488.

The previous prime is 55400461. The next prime is 55400479. The reversal of 55400476 is 67400455.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55400479) 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, 130450 + ... + 130873.

It is an arithmetic number, because the mean of its divisors is an integer number (8231706).

Almost surely, 2^55400476 is an apocalyptic number.

It is an amenable number.

55400476 is a deficient number, since it is larger than the sum of its proper divisors (43379996).

55400476 is a wasteful number, since it uses less digits than its factorization.

55400476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261380 (or 261378 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55400476 is about 7443.1496021510. The cubic root of 55400476 is about 381.2160397592.

The spelling of 55400476 in words is "fifty-five million, four hundred thousand, four hundred seventy-six".