51241183957 has 2 divisors, whose sum is σ = 51241183958. Its totient is φ = 51241183956.

The previous prime is 51241183921. The next prime is 51241183993. The reversal of 51241183957 is 75938114215.

It is a balanced prime because it is at equal distance from previous prime (51241183921) and next prime (51241183993).

It can be written as a sum of positive squares in only one way, i.e., 36249875236 + 14991308721 = 190394^2 + 122439^2 .

It is a cyclic number.

It is not a de Polignac number, because 51241183957 - 2³¹ = 49093700309 is a prime.

It is a super-2 number, since 2×51241183957² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51241183057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620591978 + 25620591979.

It is an arithmetic number, because the mean of its divisors is an integer number (25620591979).

Almost surely, 2^51241183957 is an apocalyptic number.

It is an amenable number.

51241183957 is a deficient number, since it is larger than the sum of its proper divisors (1).

51241183957 is an equidigital number, since it uses as much as digits as its factorization.

51241183957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 46.

The spelling of 51241183957 in words is "fifty-one billion, two hundred forty-one million, one hundred eighty-three thousand, nine hundred fifty-seven".