51386325 has 48 divisors (see below), whose sum is σ = 92244096. Its totient is φ = 25139200.

The previous prime is 51386311. The next prime is 51386327. The reversal of 51386325 is 52368315.

It is a de Polignac number, because none of the positive numbers 2^k-51386325 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51386327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51784 + ... + 52766.

It is an arithmetic number, because the mean of its divisors is an integer number (1921752).

Almost surely, 2^51386325 is an apocalyptic number.

It is an amenable number.

51386325 is a deficient number, since it is larger than the sum of its proper divisors (40857771).

51386325 is a wasteful number, since it uses less digits than its factorization.

51386325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1049 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 51386325 is about 7168.4255593540. The cubic root of 51386325 is about 371.7770009876. Note that the first 3 decimals are identical.

The spelling of 51386325 in words is "fifty-one million, three hundred eighty-six thousand, three hundred twenty-five".