51994371 has 24 divisors (see below), whose sum is σ = 81902016. Its totient is φ = 29084640.

The previous prime is 51994343. The next prime is 51994373. The reversal of 51994371 is 17349915.

It is a happy number.

51994371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51994371 - 2⁵ = 51994339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (51994373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (3412584).

Almost surely, 2^51994371 is an apocalyptic number.

51994371 is a deficient number, since it is larger than the sum of its proper divisors (29907645).

51994371 is a wasteful number, since it uses less digits than its factorization.

51994371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9363 (or 9350 counting only the distinct ones).

The product of its digits is 34020, while the sum is 39.

The square root of 51994371 is about 7210.7122394393. The cubic root of 51994371 is about 373.2376470513.

The spelling of 51994371 in words is "fifty-one million, nine hundred ninety-four thousand, three hundred seventy-one".