51625389 has 8 divisors (see below), whose sum is σ = 69102720. Its totient is φ = 34282496.

The previous prime is 51625297. The next prime is 51625391. The reversal of 51625389 is 98352615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51625389 - 2¹³ = 51617197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32709 + ... + 34250.

It is an arithmetic number, because the mean of its divisors is an integer number (8637840).

Almost surely, 2^51625389 is an apocalyptic number.

It is an amenable number.

51625389 is a deficient number, since it is larger than the sum of its proper divisors (17477331).

51625389 is a wasteful number, since it uses less digits than its factorization.

51625389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67219.

The product of its digits is 64800, while the sum is 39.

The square root of 51625389 is about 7185.0810016311. The cubic root of 51625389 is about 372.3526471518.

The spelling of 51625389 in words is "fifty-one million, six hundred twenty-five thousand, three hundred eighty-nine".