51338925 has 36 divisors (see below), whose sum is σ = 100317984. Its totient is φ = 24890400.

The previous prime is 51338897. The next prime is 51338939. The reversal of 51338925 is 52983315.

It is not a de Polignac number, because 51338925 - 2⁷ = 51338797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51338925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7897 + ... + 12846.

Almost surely, 2^51338925 is an apocalyptic number.

51338925 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51338925 is a deficient number, since it is larger than the sum of its proper divisors (48979059).

51338925 is a wasteful number, since it uses less digits than its factorization.

51338925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20770 (or 20762 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 51338925 is about 7165.1186312580. The cubic root of 51338925 is about 371.6626537625.

The spelling of 51338925 in words is "fifty-one million, three hundred thirty-eight thousand, nine hundred twenty-five".