51150250 has 16 divisors (see below), whose sum is σ = 95753736. Its totient is φ = 20460000.

The previous prime is 51150233. The next prime is 51150251. The reversal of 51150250 is 5205115.

It can be written as a sum of positive squares in 4 ways, for example, as 20602521 + 30547729 = 4539^2 + 5527^2 .

It is not an unprimeable number, because it can be changed into a prime (51150251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102051 + ... + 102550.

Almost surely, 2^51150250 is an apocalyptic number.

51150250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51150250 is a deficient number, since it is larger than the sum of its proper divisors (44603486).

51150250 is a wasteful number, since it uses less digits than its factorization.

51150250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204618 (or 204608 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 51150250 is about 7151.9402961714. The cubic root of 51150250 is about 371.2067973776.

Adding to 51150250 its reverse (5205115), we get a palindrome (56355365).

The spelling of 51150250 in words is "fifty-one million, one hundred fifty thousand, two hundred fifty".