51925949 has 2 divisors, whose sum is σ = 51925950. Its totient is φ = 51925948.

The previous prime is 51925933. The next prime is 51925957. The reversal of 51925949 is 94952915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51912025 + 13924 = 7205^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 51925949 - 2⁴ = 51925933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51925969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25962974 + 25962975.

It is an arithmetic number, because the mean of its divisors is an integer number (25962975).

Almost surely, 2^51925949 is an apocalyptic number.

It is an amenable number.

51925949 is a deficient number, since it is larger than the sum of its proper divisors (1).

51925949 is an equidigital number, since it uses as much as digits as its factorization.

51925949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 44.

The square root of 51925949 is about 7205.9662086357. The cubic root of 51925949 is about 373.0738544709.

The spelling of 51925949 in words is "fifty-one million, nine hundred twenty-five thousand, nine hundred forty-nine".