51423770 has 16 divisors (see below), whose sum is σ = 92706120. Its totient is φ = 20537664.

The previous prime is 51423769. The next prime is 51423787. The reversal of 51423770 is 7732415.

It can be written as a sum of positive squares in 4 ways, for example, as 37368769 + 14055001 = 6113^2 + 3749^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3464 + ... + 10716.

Almost surely, 2^51423770 is an apocalyptic number.

51423770 is a deficient number, since it is larger than the sum of its proper divisors (41282350).

51423770 is a wasteful number, since it uses less digits than its factorization.

51423770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 51423770 is about 7171.0368845795. The cubic root of 51423770 is about 371.8672831767.

The spelling of 51423770 in words is "fifty-one million, four hundred twenty-three thousand, seven hundred seventy".