51925121 has 2 divisors, whose sum is σ = 51925122. Its totient is φ = 51925120.

The previous prime is 51925103. The next prime is 51925127. The reversal of 51925121 is 12152915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 7182400 = 6689^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 51925121 - 2⁶ = 51925057 is a prime.

It is equal to p_3109634 and since 51925121 and 3109634 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51925127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25962560 + 25962561.

It is an arithmetic number, because the mean of its divisors is an integer number (25962561).

Almost surely, 2^51925121 is an apocalyptic number.

It is an amenable number.

51925121 is a deficient number, since it is larger than the sum of its proper divisors (1).

51925121 is an equidigital number, since it uses as much as digits as its factorization.

51925121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 26.

The square root of 51925121 is about 7205.9087560141. The cubic root of 51925121 is about 373.0718714752.

The spelling of 51925121 in words is "fifty-one million, nine hundred twenty-five thousand, one hundred twenty-one".