51044148157 has 2 divisors, whose sum is σ = 51044148158. Its totient is φ = 51044148156.

The previous prime is 51044148139. The next prime is 51044148161. The reversal of 51044148157 is 75184144015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32835614436 + 18208533721 = 181206^2 + 134939^2 .

It is a cyclic number.

It is not a de Polignac number, because 51044148157 - 2²³ = 51035759549 is a prime.

It is a super-2 number, since 2×51044148157² (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 (51044148137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25522074078 + 25522074079.

It is an arithmetic number, because the mean of its divisors is an integer number (25522074079).

Almost surely, 2^51044148157 is an apocalyptic number.

It is an amenable number.

51044148157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51044148157 is an equidigital number, since it uses as much as digits as its factorization.

51044148157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 51044148157 in words is "fifty-one billion, forty-four million, one hundred forty-eight thousand, one hundred fifty-seven".