51238860 has 24 divisors (see below), whose sum is σ = 143468976. Its totient is φ = 13663680.

The previous prime is 51238819. The next prime is 51238879. The reversal of 51238860 is 6883215.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426931 + ... + 427050.

It is an arithmetic number, because the mean of its divisors is an integer number (5977874).

Almost surely, 2^51238860 is an apocalyptic number.

It is an amenable number.

51238860 is an abundant number, since it is smaller than the sum of its proper divisors (92230116).

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

51238860 is a wasteful number, since it uses less digits than its factorization.

51238860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853993 (or 853991 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51238860 is about 7158.1324380036. The cubic root of 51238860 is about 371.4210267557.

The spelling of 51238860 in words is "fifty-one million, two hundred thirty-eight thousand, eight hundred sixty".