55120577 has 8 divisors (see below), whose sum is σ = 58275360. Its totient is φ = 51991200.

The previous prime is 55120547. The next prime is 55120601. The reversal of 55120577 is 77502155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55120577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55120547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799 + ... + 10652.

It is an arithmetic number, because the mean of its divisors is an integer number (7284420).

Almost surely, 2^55120577 is an apocalyptic number.

It is an amenable number.

55120577 is a deficient number, since it is larger than the sum of its proper divisors (3154783).

55120577 is a wasteful number, since it uses less digits than its factorization.

55120577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12703.

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55120577 is about 7424.3233361701. The cubic root of 55120577 is about 380.5729514779.

The spelling of 55120577 in words is "fifty-five million, one hundred twenty thousand, five hundred seventy-seven".