51453252400 has 120 divisors (see below), whose sum is σ = 135355051008. Its totient is φ = 18640800000.

The previous prime is 51453252379. The next prime is 51453252439. The reversal of 51453252400 is 425235415.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1170825 + ... + 1213975.

Almost surely, 2^51453252400 is an apocalyptic number.

51453252400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51453252400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67677525504).

51453252400 is an abundant number, since it is smaller than the sum of its proper divisors (83901798608).

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

51453252400 is a wasteful number, since it uses less digits than its factorization.

51453252400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43451 (or 43440 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 51453252400 its reverse (425235415), we get a palindrome (51878487815).

The spelling of 51453252400 in words is "fifty-one billion, four hundred fifty-three million, two hundred fifty-two thousand, four hundred".