51196637 has 2 divisors, whose sum is σ = 51196638. Its totient is φ = 51196636.

The previous prime is 51196589. The next prime is 51196669. The reversal of 51196637 is 73669115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39677401 + 11519236 = 6299^2 + 3394^2 .

It is a cyclic number.

It is not a de Polignac number, because 51196637 - 2⁶ = 51196573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51196637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51196237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25598318 + 25598319.

It is an arithmetic number, because the mean of its divisors is an integer number (25598319).

Almost surely, 2^51196637 is an apocalyptic number.

It is an amenable number.

51196637 is a deficient number, since it is larger than the sum of its proper divisors (1).

51196637 is an equidigital number, since it uses as much as digits as its factorization.

51196637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 51196637 is about 7155.1825273713. The cubic root of 51196637 is about 371.3189764781.

The spelling of 51196637 in words is "fifty-one million, one hundred ninety-six thousand, six hundred thirty-seven".