2517161957 has 2 divisors, whose sum is σ = 2517161958. Its totient is φ = 2517161956.

The previous prime is 2517161953. The next prime is 2517162007. The reversal of 2517161957 is 7591617152.

2517161957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2359433476 + 157728481 = 48574^2 + 12559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517161957 - 2² = 2517161953 is a prime.

It is a super-2 number, since 2×2517161957² = 12672208635536139698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2517161953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258580978 + 1258580979.

It is an arithmetic number, because the mean of its divisors is an integer number (1258580979).

Almost surely, 2^2517161957 is an apocalyptic number.

It is an amenable number.

2517161957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517161957 is an equidigital number, since it uses as much as digits as its factorization.

2517161957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 44.

The square root of 2517161957 is about 50171.3260438669. The cubic root of 2517161957 is about 1360.3073766384.

The spelling of 2517161957 in words is "two billion, five hundred seventeen million, one hundred sixty-one thousand, nine hundred fifty-seven".