51253700 has 18 divisors (see below), whose sum is σ = 111220746. Its totient is φ = 20501440.

The previous prime is 51253679. The next prime is 51253723. The reversal of 51253700 is 735215.

It can be written as a sum of positive squares in 3 ways, for example, as 73984 + 51179716 = 272^2 + 7154^2 .

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, 256169 + ... + 256368.

Almost surely, 2^51253700 is an apocalyptic number.

51253700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51253700 is an abundant number, since it is smaller than the sum of its proper divisors (59967046).

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

51253700 is a wasteful number, since it uses less digits than its factorization.

51253700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512551 (or 512544 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 51253700 is about 7159.1689461836. The cubic root of 51253700 is about 371.4568807670.

Adding to 51253700 its reverse (735215), we get a palindrome (51988915).

The spelling of 51253700 in words is "fifty-one million, two hundred fifty-three thousand, seven hundred".