51972773 has 2 divisors, whose sum is σ = 51972774. Its totient is φ = 51972772.

The previous prime is 51972769. The next prime is 51972797. The reversal of 51972773 is 37727915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35796289 + 16176484 = 5983^2 + 4022^2 .

It is a cyclic number.

It is not a de Polignac number, because 51972773 - 2² = 51972769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51972773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51972703) 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, 25986386 + 25986387.

It is an arithmetic number, because the mean of its divisors is an integer number (25986387).

Almost surely, 2^51972773 is an apocalyptic number.

It is an amenable number.

51972773 is a deficient number, since it is larger than the sum of its proper divisors (1).

51972773 is an equidigital number, since it uses as much as digits as its factorization.

51972773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92610, while the sum is 41.

The square root of 51972773 is about 7209.2144509648. The cubic root of 51972773 is about 373.1859600258.

The spelling of 51972773 in words is "fifty-one million, nine hundred seventy-two thousand, seven hundred seventy-three".