51719700 has 36 divisors (see below), whose sum is σ = 149643200. Its totient is φ = 13791840.

The previous prime is 51719683. The next prime is 51719711. The reversal of 51719700 is 791715.

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 11 ways as a sum of consecutive naturals, for example, 85900 + ... + 86499.

Almost surely, 2^51719700 is an apocalyptic number.

51719700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51719700 is an abundant number, since it is smaller than the sum of its proper divisors (97923500).

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

51719700 is a wasteful number, since it uses less digits than its factorization.

51719700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172416 (or 172409 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 30.

The square root of 51719700 is about 7191.6409810279. The cubic root of 51719700 is about 372.5792513388.

The spelling of 51719700 in words is "fifty-one million, seven hundred nineteen thousand, seven hundred".