51265779 has 8 divisors (see below), whose sum is σ = 68736960. Its totient is φ = 33985896.

The previous prime is 51265777. The next prime is 51265789. The reversal of 51265779 is 97756215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51265779 - 2¹ = 51265777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51265779.

It is not an unprimeable number, because it can be changed into a prime (51265771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47197 + ... + 48270.

It is an arithmetic number, because the mean of its divisors is an integer number (8592120).

Almost surely, 2^51265779 is an apocalyptic number.

51265779 is a deficient number, since it is larger than the sum of its proper divisors (17471181).

51265779 is a wasteful number, since it uses less digits than its factorization.

51265779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95649.

The product of its digits is 132300, while the sum is 42.

The square root of 51265779 is about 7160.0124999891. The cubic root of 51265779 is about 371.4860589873.

The spelling of 51265779 in words is "fifty-one million, two hundred sixty-five thousand, seven hundred seventy-nine".