51243276 has 48 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 14282880.

The previous prime is 51243239. The next prime is 51243277. The reversal of 51243276 is 67234215.

It is not an unprimeable number, because it can be changed into a prime (51243277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996 + ... + 10883.

It is an arithmetic number, because the mean of its divisors is an integer number (2916480).

Almost surely, 2^51243276 is an apocalyptic number.

It is an amenable number.

51243276 is an abundant number, since it is smaller than the sum of its proper divisors (88747764).

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

51243276 is a wasteful number, since it uses less digits than its factorization.

51243276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14934 (or 14932 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 51243276 is about 7158.4408917026. The cubic root of 51243276 is about 371.4316967052.

The spelling of 51243276 in words is "fifty-one million, two hundred forty-three thousand, two hundred seventy-six".