51739325 has 12 divisors (see below), whose sum is σ = 69989568. Its totient is φ = 37628400.

The previous prime is 51739321. The next prime is 51739327. The reversal of 51739325 is 52393715.

It is a happy number.

It is not a de Polignac number, because 51739325 - 2² = 51739321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51739321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93797 + ... + 94346.

It is an arithmetic number, because the mean of its divisors is an integer number (5832464).

Almost surely, 2^51739325 is an apocalyptic number.

51739325 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51739325 is a deficient number, since it is larger than the sum of its proper divisors (18250243).

51739325 is a wasteful number, since it uses less digits than its factorization.

51739325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188164 (or 188159 counting only the distinct ones).

The product of its digits is 28350, while the sum is 35.

The square root of 51739325 is about 7193.0052829120. The cubic root of 51739325 is about 372.6263703487.

The spelling of 51739325 in words is "fifty-one million, seven hundred thirty-nine thousand, three hundred twenty-five".