55403577 has 12 divisors (see below), whose sum is σ = 80104960. Its totient is φ = 36899928.

The previous prime is 55403531. The next prime is 55403581. The reversal of 55403577 is 77530455.

55403577 is a `hidden beast` number, since 554 + 0 + 35 + 77 = 666.

55403577 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 55403577 - 2⁸ = 55403321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55403507) 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, 9624 + ... + 14262.

Almost surely, 2^55403577 is an apocalyptic number.

It is an amenable number.

55403577 is a deficient number, since it is larger than the sum of its proper divisors (24701383).

55403577 is a wasteful number, since it uses less digits than its factorization.

55403577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972 (or 5969 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 55403577 is about 7443.3579115880. The cubic root of 55403577 is about 381.2231523870.

The spelling of 55403577 in words is "fifty-five million, four hundred three thousand, five hundred seventy-seven".