51756553 has 2 divisors, whose sum is σ = 51756554. Its totient is φ = 51756552.

The previous prime is 51756533. The next prime is 51756557. The reversal of 51756553 is 35565715.

51756553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49674304 + 2082249 = 7048^2 + 1443^2 .

It is a cyclic number.

It is not a de Polignac number, because 51756553 - 2⁵ = 51756521 is a prime.

It is not a weakly prime, because it can be changed into another prime (51756557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25878276 + 25878277.

It is an arithmetic number, because the mean of its divisors is an integer number (25878277).

Almost surely, 2^51756553 is an apocalyptic number.

It is an amenable number.

51756553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51756553 is an equidigital number, since it uses as much as digits as its factorization.

51756553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78750, while the sum is 37.

The square root of 51756553 is about 7194.2027355364. The cubic root of 51756553 is about 372.6677244169.

The spelling of 51756553 in words is "fifty-one million, seven hundred fifty-six thousand, five hundred fifty-three".