51294319 has 4 divisors (see below), whose sum is σ = 53994040. Its totient is φ = 48594600.

The previous prime is 51294317. The next prime is 51294337. The reversal of 51294319 is 91349215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51294319 - 2¹ = 51294317 is a prime.

It is a super-2 number, since 2×51294319² = 5262214323347522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51294317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349832 + ... + 1349869.

It is an arithmetic number, because the mean of its divisors is an integer number (13498510).

Almost surely, 2^51294319 is an apocalyptic number.

51294319 is a deficient number, since it is larger than the sum of its proper divisors (2699721).

51294319 is a wasteful number, since it uses less digits than its factorization.

51294319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699720.

The product of its digits is 9720, while the sum is 34.

The square root of 51294319 is about 7162.0052359657. The cubic root of 51294319 is about 371.5549824517.

The spelling of 51294319 in words is "fifty-one million, two hundred ninety-four thousand, three hundred nineteen".