51282650 has 12 divisors (see below), whose sum is σ = 95385822. Its totient is φ = 20513040.

The previous prime is 51282607. The next prime is 51282683. The reversal of 51282650 is 5628215.

It can be written as a sum of positive squares in 3 ways, for example, as 43335889 + 7946761 = 6583^2 + 2819^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512777 + ... + 512876.

Almost surely, 2^51282650 is an apocalyptic number.

51282650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51282650 is a deficient number, since it is larger than the sum of its proper divisors (44103172).

51282650 is a wasteful number, since it uses less digits than its factorization.

51282650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025665 (or 1025660 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 51282650 is about 7161.1905434781. The cubic root of 51282650 is about 371.5268051669.

The spelling of 51282650 in words is "fifty-one million, two hundred eighty-two thousand, six hundred fifty".