51779373 has 4 divisors (see below), whose sum is σ = 69039168. Its totient is φ = 34519580.

The previous prime is 51779369. The next prime is 51779407. The reversal of 51779373 is 37397715.

51779373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51779373 - 2² = 51779369 is a prime.

It is a super-2 number, since 2×51779373² = 5362206936546258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51779303) 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 in 3 ways as a sum of consecutive naturals, for example, 8629893 + ... + 8629898.

It is an arithmetic number, because the mean of its divisors is an integer number (17259792).

Almost surely, 2^51779373 is an apocalyptic number.

It is an amenable number.

51779373 is a deficient number, since it is larger than the sum of its proper divisors (17259795).

51779373 is a wasteful number, since it uses less digits than its factorization.

51779373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17259794.

The product of its digits is 138915, while the sum is 42.

The square root of 51779373 is about 7195.7885599842. The cubic root of 51779373 is about 372.7224873883.

The spelling of 51779373 in words is "fifty-one million, seven hundred seventy-nine thousand, three hundred seventy-three".