51145593 has 4 divisors (see below), whose sum is σ = 68194128. Its totient is φ = 34097060.

The previous prime is 51145561. The next prime is 51145603. The reversal of 51145593 is 39554115.

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 51145593 - 2⁵ = 51145561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51145553) 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, 8524263 + ... + 8524268.

It is an arithmetic number, because the mean of its divisors is an integer number (17048532).

Almost surely, 2^51145593 is an apocalyptic number.

It is an amenable number.

51145593 is a deficient number, since it is larger than the sum of its proper divisors (17048535).

51145593 is a wasteful number, since it uses less digits than its factorization.

51145593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17048534.

The product of its digits is 13500, while the sum is 33.

The square root of 51145593 is about 7151.6147127764. The cubic root of 51145593 is about 371.1955314664.

The spelling of 51145593 in words is "fifty-one million, one hundred forty-five thousand, five hundred ninety-three".