51345490 has 32 divisors (see below), whose sum is σ = 106064640. Its totient is φ = 17530944.

The previous prime is 51345487. The next prime is 51345521. The reversal of 51345490 is 9454315.

51345490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 17016 + ... + 19804.

It is an arithmetic number, because the mean of its divisors is an integer number (3314520).

Almost surely, 2^51345490 is an apocalyptic number.

51345490 is an abundant number, since it is smaller than the sum of its proper divisors (54719150).

51345490 is a wasteful number, since it uses less digits than its factorization.

51345490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 51345490 is about 7165.5767388257. The cubic root of 51345490 is about 371.6784952923.

The spelling of 51345490 in words is "fifty-one million, three hundred forty-five thousand, four hundred ninety".