55057117 has 8 divisors (see below), whose sum is σ = 58100960. Its totient is φ = 52027920.

The previous prime is 55057063. The next prime is 55057127. The reversal of 55057117 is 71175055.

55057117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-55057117 is a prime.

It is a super-2 number, since 2×55057117² = 6062572264703378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55057127) 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 7 ways as a sum of consecutive naturals, for example, 4558 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (7262620).

Almost surely, 2^55057117 is an apocalyptic number.

It is an amenable number.

55057117 is a deficient number, since it is larger than the sum of its proper divisors (3043843).

55057117 is a wasteful number, since it uses less digits than its factorization.

55057117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323.

The product of its (nonzero) digits is 6125, while the sum is 31.

The square root of 55057117 is about 7420.0483152066. The cubic root of 55057117 is about 380.4268449172.

The spelling of 55057117 in words is "fifty-five million, fifty-seven thousand, one hundred seventeen".