51525637 has 2 divisors, whose sum is σ = 51525638. Its totient is φ = 51525636.

The previous prime is 51525631. The next prime is 51525641. The reversal of 51525637 is 73652515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45144961 + 6380676 = 6719^2 + 2526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51525637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51525631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25762818 + 25762819.

It is an arithmetic number, because the mean of its divisors is an integer number (25762819).

Almost surely, 2^51525637 is an apocalyptic number.

It is an amenable number.

51525637 is a deficient number, since it is larger than the sum of its proper divisors (1).

51525637 is an equidigital number, since it uses as much as digits as its factorization.

51525637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 34.

The square root of 51525637 is about 7178.1360393907. The cubic root of 51525637 is about 372.1126691710.

The spelling of 51525637 in words is "fifty-one million, five hundred twenty-five thousand, six hundred thirty-seven".