5055121657 has 4 divisors (see below), whose sum is σ = 5070122356. Its totient is φ = 5040120960.

The previous prime is 5055121619. The next prime is 5055121663. The reversal of 5055121657 is 7561215505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 917544681 + 4137576976 = 30291^2 + 64324^2 .

It is a cyclic number.

It is not a de Polignac number, because 5055121657 - 2²³ = 5046733049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5055121607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7499844 + ... + 7500517.

It is an arithmetic number, because the mean of its divisors is an integer number (1267530589).

Almost surely, 2^5055121657 is an apocalyptic number.

It is an amenable number.

5055121657 is a deficient number, since it is larger than the sum of its proper divisors (15000699).

5055121657 is a wasteful number, since it uses less digits than its factorization.

5055121657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000698.

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 5055121657 is about 71099.3787384953. The cubic root of 5055121657 is about 1716.2367760869.

The spelling of 5055121657 in words is "five billion, fifty-five million, one hundred twenty-one thousand, six hundred fifty-seven".