51969628 has 24 divisors (see below), whose sum is σ = 93405312. Its totient is φ = 25287024.

The previous prime is 51969623. The next prime is 51969637. The reversal of 51969628 is 82696915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51969623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80001 + ... + 80647.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 2^51969628 is an apocalyptic number.

It is an amenable number.

51969628 is a deficient number, since it is larger than the sum of its proper divisors (41435684).

51969628 is a wasteful number, since it uses less digits than its factorization.

51969628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1159 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 51969628 is about 7208.9963240385. The cubic root of 51969628 is about 373.1784324080.

The spelling of 51969628 in words is "fifty-one million, nine hundred sixty-nine thousand, six hundred twenty-eight".