51780522 has 16 divisors (see below), whose sum is σ = 104008320. Its totient is φ = 17185632.

The previous prime is 51780503. The next prime is 51780527. The reversal of 51780522 is 22508715.

51780522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51780522.

It is not an unprimeable number, because it can be changed into a prime (51780527) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17122 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (6500520).

Almost surely, 2^51780522 is an apocalyptic number.

51780522 is an abundant number, since it is smaller than the sum of its proper divisors (52227798).

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

51780522 is a wasteful number, since it uses less digits than its factorization.

51780522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37277.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 51780522 is about 7195.8683979072. The cubic root of 51780522 is about 372.7252443096.

The spelling of 51780522 in words is "fifty-one million, seven hundred eighty thousand, five hundred twenty-two".