51294813 has 32 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 30867840.

The previous prime is 51294811. The next prime is 51294833. The reversal of 51294813 is 31849215.

It is not a de Polignac number, because 51294813 - 2¹ = 51294811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51294811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109606 + ... + 110072.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^51294813 is an apocalyptic number.

It is an amenable number.

51294813 is a deficient number, since it is larger than the sum of its proper divisors (24184227).

51294813 is a wasteful number, since it uses less digits than its factorization.

51294813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its digits is 8640, while the sum is 33.

The square root of 51294813 is about 7162.0397234307. The cubic root of 51294813 is about 371.5561752256.

The spelling of 51294813 in words is "fifty-one million, two hundred ninety-four thousand, eight hundred thirteen".