51349880 has 32 divisors (see below), whose sum is σ = 115741440. Its totient is φ = 20503680.

The previous prime is 51349871. The next prime is 51349901. The reversal of 51349880 is 8894315.

51349880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 42890 + ... + 44070.

It is an arithmetic number, because the mean of its divisors is an integer number (3616920).

Almost surely, 2^51349880 is an apocalyptic number.

It is an amenable number.

51349880 is an abundant number, since it is smaller than the sum of its proper divisors (64391560).

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

51349880 is a wasteful number, since it uses less digits than its factorization.

51349880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 51349880 is about 7165.8830579350. The cubic root of 51349880 is about 371.6890877325.

The spelling of 51349880 in words is "fifty-one million, three hundred forty-nine thousand, eight hundred eighty".