51474757 has 2 divisors, whose sum is σ = 51474758. Its totient is φ = 51474756.

The previous prime is 51474749. The next prime is 51474763. The reversal of 51474757 is 75747415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 123201 = 7166^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 51474757 - 2³ = 51474749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51474767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25737378 + 25737379.

It is an arithmetic number, because the mean of its divisors is an integer number (25737379).

Almost surely, 2^51474757 is an apocalyptic number.

It is an amenable number.

51474757 is a deficient number, since it is larger than the sum of its proper divisors (1).

51474757 is an equidigital number, since it uses as much as digits as its factorization.

51474757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137200, while the sum is 40.

The square root of 51474757 is about 7174.5910684861. The cubic root of 51474757 is about 371.9901455169.

The spelling of 51474757 in words is "fifty-one million, four hundred seventy-four thousand, seven hundred fifty-seven".