51751650 has 24 divisors (see below), whose sum is σ = 128344464. Its totient is φ = 13800400.

The previous prime is 51751643. The next prime is 51751669. The reversal of 51751650 is 5615715.

51751650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172356 + ... + 172655.

It is an arithmetic number, because the mean of its divisors is an integer number (5347686).

Almost surely, 2^51751650 is an apocalyptic number.

51751650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51751650 is an abundant number, since it is smaller than the sum of its proper divisors (76592814).

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

51751650 is a wasteful number, since it uses less digits than its factorization.

51751650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345026 (or 345021 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 51751650 is about 7193.8619669827. The cubic root of 51751650 is about 372.6559561966.

The spelling of 51751650 in words is "fifty-one million, seven hundred fifty-one thousand, six hundred fifty".