51553937 has 2 divisors, whose sum is σ = 51553938. Its totient is φ = 51553936.

The previous prime is 51553927. The next prime is 51553963. The reversal of 51553937 is 73935515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32535616 + 19018321 = 5704^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 51553937 - 2⁴ = 51553921 is a prime.

It is a Chen prime.

It is equal to p_3088667 and since 51553937 and 3088667 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51553937.

It is not a weakly prime, because it can be changed into another prime (51553907) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25776968 + 25776969.

It is an arithmetic number, because the mean of its divisors is an integer number (25776969).

Almost surely, 2^51553937 is an apocalyptic number.

It is an amenable number.

51553937 is a deficient number, since it is larger than the sum of its proper divisors (1).

51553937 is an equidigital number, since it uses as much as digits as its factorization.

51553937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70875, while the sum is 38.

The square root of 51553937 is about 7180.1070326284. The cubic root of 51553937 is about 372.1807832320.

The spelling of 51553937 in words is "fifty-one million, five hundred fifty-three thousand, nine hundred thirty-seven".