7557496957 has 2 divisors, whose sum is σ = 7557496958. Its totient is φ = 7557496956.

The previous prime is 7557496939. The next prime is 7557496997. The reversal of 7557496957 is 7596947557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6185979801 + 1371517156 = 78651^2 + 37034^2 .

It is a cyclic number.

It is not a de Polignac number, because 7557496957 - 2¹¹ = 7557494909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7557496997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778748478 + 3778748479.

It is an arithmetic number, because the mean of its divisors is an integer number (3778748479).

Almost surely, 2^7557496957 is an apocalyptic number.

It is an amenable number.

7557496957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7557496957 is an equidigital number, since it uses as much as digits as its factorization.

7557496957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83349000, while the sum is 64.

The square root of 7557496957 is about 86933.8654207898. The cubic root of 7557496957 is about 1962.4231585097.

The spelling of 7557496957 in words is "seven billion, five hundred fifty-seven million, four hundred ninety-six thousand, nine hundred fifty-seven".