51242312 has 16 divisors (see below), whose sum is σ = 104814000. Its totient is φ = 23291920.

The previous prime is 51242311. The next prime is 51242339. The reversal of 51242312 is 21324215.

It is not an unprimeable number, because it can be changed into a prime (51242311) 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, 291062 + ... + 291237.

It is an arithmetic number, because the mean of its divisors is an integer number (6550875).

Almost surely, 2^51242312 is an apocalyptic number.

It is an amenable number.

51242312 is an abundant number, since it is smaller than the sum of its proper divisors (53571688).

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

51242312 is a wasteful number, since it uses less digits than its factorization.

51242312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582316 (or 582312 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 51242312 is about 7158.3735582882. The cubic root of 51242312 is about 371.4293675384.

Adding to 51242312 its reverse (21324215), we get a palindrome (72566527).

It can be divided in two parts, 512 and 42312, that added together give a palindrome (42824).

The spelling of 51242312 in words is "fifty-one million, two hundred forty-two thousand, three hundred twelve".