51340325 has 12 divisors (see below), whose sum is σ = 64742880. Its totient is φ = 40374960.

The previous prime is 51340319. The next prime is 51340327. The reversal of 51340325 is 52304315.

It is not a de Polignac number, because 51340325 - 2²⁰ = 50291749 is a prime.

It is a super-2 number, since 2×51340325² = 5271657942211250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51340325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340327) 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, 15929 + ... + 18878.

It is an arithmetic number, because the mean of its divisors is an integer number (5395240).

Almost surely, 2^51340325 is an apocalyptic number.

It is an amenable number.

51340325 is a deficient number, since it is larger than the sum of its proper divisors (13402555).

51340325 is a wasteful number, since it uses less digits than its factorization.

51340325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34876 (or 34871 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 51340325 is about 7165.2163261133. The cubic root of 51340325 is about 371.6660321152. Note that the first 3 decimals are identical.

The spelling of 51340325 in words is "fifty-one million, three hundred forty thousand, three hundred twenty-five".