51983397 has 8 divisors (see below), whose sum is σ = 77012480. Its totient is φ = 34655580.

The previous prime is 51983383. The next prime is 51983401. The reversal of 51983397 is 79338915.

It is a happy number.

It is not a de Polignac number, because 51983397 - 2⁶ = 51983333 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 (51913397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962629 + ... + 962682.

It is an arithmetic number, because the mean of its divisors is an integer number (9626560).

Almost surely, 2^51983397 is an apocalyptic number.

It is an amenable number.

51983397 is a deficient number, since it is larger than the sum of its proper divisors (25029083).

51983397 is a wasteful number, since it uses less digits than its factorization.

51983397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925320 (or 1925314 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 51983397 is about 7209.9512481015. The cubic root of 51983397 is about 373.2113865282.

The spelling of 51983397 in words is "fifty-one million, nine hundred eighty-three thousand, three hundred ninety-seven".