51863700 has 72 divisors (see below), whose sum is σ = 171502912. Its totient is φ = 11854080.

The previous prime is 51863671. The next prime is 51863743. The reversal of 51863700 is 736815.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10249 + ... + 14448.

Almost surely, 2^51863700 is an apocalyptic number.

51863700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51863700 is an abundant number, since it is smaller than the sum of its proper divisors (119639212).

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

51863700 is a wasteful number, since it uses less digits than its factorization.

51863700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24721 (or 24714 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 51863700 is about 7201.6456452675. The cubic root of 51863700 is about 372.9247141334.

The spelling of 51863700 in words is "fifty-one million, eight hundred sixty-three thousand, seven hundred".