51253900 has 36 divisors (see below), whose sum is σ = 111543208. Its totient is φ = 20442240.

The previous prime is 51253897. The next prime is 51253903. The reversal of 51253900 is 935215.

It is an interprime number because it is at equal distance from previous prime (51253897) and next prime (51253903).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51253903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54232 + ... + 55168.

Almost surely, 2^51253900 is an apocalyptic number.

51253900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51253900 is an abundant number, since it is smaller than the sum of its proper divisors (60289308).

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

51253900 is a wasteful number, since it uses less digits than its factorization.

51253900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 51253900 is about 7159.1829142717. The cubic root of 51253900 is about 371.4573639275.

It can be divided in two parts, 5125 and 3900, that added together give a square (9025 = 95²).

The spelling of 51253900 in words is "fifty-one million, two hundred fifty-three thousand, nine hundred".