51293983 has 16 divisors (see below), whose sum is σ = 56881440. Its totient is φ = 45961344.

The previous prime is 51293971. The next prime is 51293987. The reversal of 51293983 is 38939215.

It is not a de Polignac number, because 51293983 - 2²¹ = 49196831 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 (51293987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74760 + ... + 75442.

It is an arithmetic number, because the mean of its divisors is an integer number (3555090).

Almost surely, 2^51293983 is an apocalyptic number.

51293983 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51293983 is a deficient number, since it is larger than the sum of its proper divisors (5587457).

51293983 is a wasteful number, since it uses less digits than its factorization.

51293983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its digits is 58320, while the sum is 40.

The square root of 51293983 is about 7161.9817788095. The cubic root of 51293983 is about 371.5541711680.

The spelling of 51293983 in words is "fifty-one million, two hundred ninety-three thousand, nine hundred eighty-three".