51595393 has 4 divisors (see below), whose sum is σ = 54310960. Its totient is φ = 48879828.

The previous prime is 51595387. The next prime is 51595409. The reversal of 51595393 is 39359515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51595393 - 2⁵ = 51595361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51595993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357755 + ... + 1357792.

It is an arithmetic number, because the mean of its divisors is an integer number (13577740).

Almost surely, 2^51595393 is an apocalyptic number.

It is an amenable number.

51595393 is a deficient number, since it is larger than the sum of its proper divisors (2715567).

51595393 is a wasteful number, since it uses less digits than its factorization.

51595393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715566.

The product of its digits is 91125, while the sum is 40.

The square root of 51595393 is about 7182.9933175522. The cubic root of 51595393 is about 372.2805169195.

The spelling of 51595393 in words is "fifty-one million, five hundred ninety-five thousand, three hundred ninety-three".