51369983 has 6 divisors (see below), whose sum is σ = 59756976. Its totient is φ = 44031372.

The previous prime is 51369979. The next prime is 51370009. The reversal of 51369983 is 38996315.

It is not a de Polignac number, because 51369983 - 2² = 51369979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51369953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 524135 + ... + 524232.

It is an arithmetic number, because the mean of its divisors is an integer number (9959496).

Almost surely, 2^51369983 is an apocalyptic number.

51369983 is a deficient number, since it is larger than the sum of its proper divisors (8386993).

51369983 is a wasteful number, since it uses less digits than its factorization.

51369983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048381 (or 1048374 counting only the distinct ones).

The product of its digits is 174960, while the sum is 44.

The square root of 51369983 is about 7167.2856089317. The cubic root of 51369983 is about 371.7375856768.

The spelling of 51369983 in words is "fifty-one million, three hundred sixty-nine thousand, nine hundred eighty-three".