51007870 has 16 divisors (see below), whose sum is σ = 91925280. Its totient is φ = 20378464.

The previous prime is 51007841. The next prime is 51007883. The reversal of 51007870 is 7870015.

It is a happy number.

51007870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 7236 + ... + 12424.

It is an arithmetic number, because the mean of its divisors is an integer number (5745330).

Almost surely, 2^51007870 is an apocalyptic number.

51007870 is a deficient number, since it is larger than the sum of its proper divisors (40917410).

51007870 is a wasteful number, since it uses less digits than its factorization.

51007870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 51007870 is about 7141.9794175004. The cubic root of 51007870 is about 370.8620513326.

Adding to 51007870 its reverse (7870015), we get a palindrome (58877885).

The spelling of 51007870 in words is "fifty-one million, seven thousand, eight hundred seventy".