51481770 has 16 divisors (see below), whose sum is σ = 123556320. Its totient is φ = 13728464.

The previous prime is 51481753. The next prime is 51481823. The reversal of 51481770 is 7718415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858000 + ... + 858059.

It is an arithmetic number, because the mean of its divisors is an integer number (7722270).

Almost surely, 2^51481770 is an apocalyptic number.

51481770 is an abundant number, since it is smaller than the sum of its proper divisors (72074550).

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

51481770 is a wasteful number, since it uses less digits than its factorization.

51481770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716069.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 51481770 is about 7175.0797904971. The cubic root of 51481770 is about 372.0070382528.

The spelling of 51481770 in words is "fifty-one million, four hundred eighty-one thousand, seven hundred seventy".