51213092 has 24 divisors (see below), whose sum is σ = 103582080. Its totient is φ = 21700800.

The previous prime is 51213091. The next prime is 51213119. The reversal of 51213092 is 29031215.

It is not an unprimeable number, because it can be changed into a prime (51213091) 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, 7784 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (4315920).

Almost surely, 2^51213092 is an apocalyptic number.

It is an amenable number.

51213092 is an abundant number, since it is smaller than the sum of its proper divisors (52368988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51213092 is a wasteful number, since it uses less digits than its factorization.

51213092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20651 (or 20649 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51213092 is about 7156.3323008368. The cubic root of 51213092 is about 371.3587538256.

The spelling of 51213092 in words is "fifty-one million, two hundred thirteen thousand, ninety-two".