55577945 has 8 divisors (see below), whose sum is σ = 70203840. Its totient is φ = 42122160.

The previous prime is 55577939. The next prime is 55577953. The reversal of 55577945 is 54977555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55577945 - 2⁸ = 55577689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55577945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292421 + ... + 292610.

It is an arithmetic number, because the mean of its divisors is an integer number (8775480).

Almost surely, 2^55577945 is an apocalyptic number.

It is an amenable number.

55577945 is a deficient number, since it is larger than the sum of its proper divisors (14625895).

55577945 is a wasteful number, since it uses less digits than its factorization.

55577945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585055.

The product of its digits is 1102500, while the sum is 47.

The square root of 55577945 is about 7455.0617032993. The cubic root of 55577945 is about 381.6226663319.

The spelling of 55577945 in words is "fifty-five million, five hundred seventy-seven thousand, nine hundred forty-five".