55456407 has 10 divisors (see below), whose sum is σ = 82842408. Its totient is φ = 36970884.

The previous prime is 55456399. The next prime is 55456441. The reversal of 55456407 is 70465455.

It is a happy number.

55456407 is a `hidden beast` number, since 5 + 5 + 4 + 5 + 640 + 7 = 666.

It is not a de Polignac number, because 55456407 - 2³ = 55456399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55456487) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 342243 + ... + 342404.

Almost surely, 2^55456407 is an apocalyptic number.

55456407 is a deficient number, since it is larger than the sum of its proper divisors (27386001).

55456407 is an equidigital number, since it uses as much as digits as its factorization.

55456407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684659 (or 684650 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 55456407 is about 7446.9058675399. The cubic root of 55456407 is about 381.3442854866.

The spelling of 55456407 in words is "fifty-five million, four hundred fifty-six thousand, four hundred seven".