56454390 has 24 divisors (see below), whose sum is σ = 146781648. Its totient is φ = 15054480.

The previous prime is 56454389. The next prime is 56454407. The reversal of 56454390 is 9345465.

It is a happy number.

56454390 is a `hidden beast` number, since 5 + 645 + 4 + 3 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313546 + ... + 313725.

It is an arithmetic number, because the mean of its divisors is an integer number (6115902).

Almost surely, 2^56454390 is an apocalyptic number.

56454390 is an abundant number, since it is smaller than the sum of its proper divisors (90327258).

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

56454390 is a wasteful number, since it uses less digits than its factorization.

56454390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627284 (or 627281 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56454390 is about 7513.6136445788. The cubic root of 56454390 is about 383.6182322309.

The spelling of 56454390 in words is "fifty-six million, four hundred fifty-four thousand, three hundred ninety".