51287262 has 16 divisors (see below), whose sum is σ = 110465040. Its totient is φ = 15780672.

The previous prime is 51287233. The next prime is 51287279. The reversal of 51287262 is 26278215.

It is a congruent 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, 328687 + ... + 328842.

It is an arithmetic number, because the mean of its divisors is an integer number (6904065).

Almost surely, 2^51287262 is an apocalyptic number.

51287262 is an abundant number, since it is smaller than the sum of its proper divisors (59177778).

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

51287262 is a wasteful number, since it uses less digits than its factorization.

51287262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657547.

The product of its digits is 13440, while the sum is 33.

The square root of 51287262 is about 7161.5125497342. The cubic root of 51287262 is about 371.5379423336.

The spelling of 51287262 in words is "fifty-one million, two hundred eighty-seven thousand, two hundred sixty-two".