51755650 has 24 divisors (see below), whose sum is σ = 101929860. Its totient is φ = 19484160.

The previous prime is 51755623. The next prime is 51755657. The reversal of 51755650 is 5655715.

It can be written as a sum of positive squares in 6 ways, for example, as 12103441 + 39652209 = 3479^2 + 6297^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (51755657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29595 + ... + 31294.

Almost surely, 2^51755650 is an apocalyptic number.

51755650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51755650 is a deficient number, since it is larger than the sum of its proper divisors (50174210).

51755650 is a wasteful number, since it uses less digits than its factorization.

51755650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60918 (or 60913 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 51755650 is about 7194.1399763975. The cubic root of 51755650 is about 372.6655570848.

The spelling of 51755650 in words is "fifty-one million, seven hundred fifty-five thousand, six hundred fifty".