51593945 has 16 divisors (see below), whose sum is σ = 69576192. Its totient is φ = 36442560.

The previous prime is 51593933. The next prime is 51593959. The reversal of 51593945 is 54939515.

It is a happy number.

It is not a de Polignac number, because 51593945 - 2¹⁶ = 51528409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15761 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (4348512).

Almost surely, 2^51593945 is an apocalyptic number.

It is an amenable number.

51593945 is a deficient number, since it is larger than the sum of its proper divisors (17982247).

51593945 is a wasteful number, since it uses less digits than its factorization.

51593945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34552.

The product of its digits is 121500, while the sum is 41.

The square root of 51593945 is about 7182.8925232110. The cubic root of 51593945 is about 372.2770342621.

The spelling of 51593945 in words is "fifty-one million, five hundred ninety-three thousand, nine hundred forty-five".