51283964 has 12 divisors (see below), whose sum is σ = 94470600. Its totient is φ = 24292368.

The previous prime is 51283963. The next prime is 51284017. The reversal of 51283964 is 46938215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51283963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337319 + ... + 337470.

It is an arithmetic number, because the mean of its divisors is an integer number (7872550).

Almost surely, 2^51283964 is an apocalyptic number.

It is an amenable number.

51283964 is a deficient number, since it is larger than the sum of its proper divisors (43186636).

51283964 is a wasteful number, since it uses less digits than its factorization.

51283964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674812 (or 674810 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 51283964 is about 7161.2822874119. The cubic root of 51283964 is about 371.5299783132.

The spelling of 51283964 in words is "fifty-one million, two hundred eighty-three thousand, nine hundred sixty-four".