54405657 has 12 divisors (see below), whose sum is σ = 79206400. Its totient is φ = 35984088.

The previous prime is 54405629. The next prime is 54405677. The reversal of 54405657 is 75650445.

It is a happy number.

54405657 is a `hidden beast` number, since 54 + 40 + 565 + 7 = 666.

54405657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54405657 - 2⁷ = 54405529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54405677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22657 + ... + 24942.

Almost surely, 2^54405657 is an apocalyptic number.

It is an amenable number.

54405657 is a deficient number, since it is larger than the sum of its proper divisors (24800743).

54405657 is a wasteful number, since it uses less digits than its factorization.

54405657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47732 (or 47729 counting only the distinct ones).

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

The square root of 54405657 is about 7376.0190482400. The cubic root of 54405657 is about 378.9204284790.

The spelling of 54405657 in words is "fifty-four million, four hundred five thousand, six hundred fifty-seven".