51212079 has 24 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 33454032.

The previous prime is 51212071. The next prime is 51212081. The reversal of 51212079 is 97021215.

It is not a de Polignac number, because 51212079 - 2³ = 51212071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133522 + ... + 133904.

It is an arithmetic number, because the mean of its divisors is an integer number (3144960).

Almost surely, 2^51212079 is an apocalyptic number.

51212079 is a deficient number, since it is larger than the sum of its proper divisors (24266961).

51212079 is a wasteful number, since it uses less digits than its factorization.

51212079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51212079 is about 7156.2615240082. The cubic root of 51212079 is about 371.3563053052.

The spelling of 51212079 in words is "fifty-one million, two hundred twelve thousand, seventy-nine".