51852400 has 30 divisors (see below), whose sum is σ = 124576352. Its totient is φ = 20740800.

The previous prime is 51852389. The next prime is 51852403. The reversal of 51852400 is 425815.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51852403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64416 + ... + 65215.

Almost surely, 2^51852400 is an apocalyptic number.

51852400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51852400 is an abundant number, since it is smaller than the sum of its proper divisors (72723952).

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

51852400 is a wasteful number, since it uses less digits than its factorization.

51852400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129649 (or 129638 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 51852400 is about 7200.8610596234. The cubic root of 51852400 is about 372.8976280381.

The spelling of 51852400 in words is "fifty-one million, eight hundred fifty-two thousand, four hundred".