51957553 has 2 divisors, whose sum is σ = 51957554. Its totient is φ = 51957552.

The previous prime is 51957551. The next prime is 51957557. The reversal of 51957553 is 35575915.

51957553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 3055504 = 6993^2 + 1748^2 .

It is a cyclic number.

It is not a de Polignac number, because 51957553 - 2¹ = 51957551 is a prime.

Together with 51957551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51957551) 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, 25978776 + 25978777.

It is an arithmetic number, because the mean of its divisors is an integer number (25978777).

Almost surely, 2^51957553 is an apocalyptic number.

It is an amenable number.

51957553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51957553 is an equidigital number, since it uses as much as digits as its factorization.

51957553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118125, while the sum is 40.

The square root of 51957553 is about 7208.1587801602. The cubic root of 51957553 is about 373.1495278421.

The spelling of 51957553 in words is "fifty-one million, nine hundred fifty-seven thousand, five hundred fifty-three".