51938481 has 24 divisors (see below), whose sum is σ = 81177120. Its totient is φ = 29451072.

The previous prime is 51938479. The next prime is 51938489. The reversal of 51938481 is 18483915.

It is not a de Polignac number, because 51938481 - 2¹ = 51938479 is a prime.

It is a super-2 number, since 2×51938481² = 5395211617174722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51938489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18850 + ... + 21428.

It is an arithmetic number, because the mean of its divisors is an integer number (3382380).

Almost surely, 2^51938481 is an apocalyptic number.

It is an amenable number.

51938481 is a deficient number, since it is larger than the sum of its proper divisors (29238639).

51938481 is a wasteful number, since it uses less digits than its factorization.

51938481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2726 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 51938481 is about 7206.8357134043. The cubic root of 51938481 is about 373.1038650633.

The spelling of 51938481 in words is "fifty-one million, nine hundred thirty-eight thousand, four hundred eighty-one".