51212593 has 4 divisors (see below), whose sum is σ = 51236388. Its totient is φ = 51188800.

The previous prime is 51212587. The next prime is 51212599. The reversal of 51212593 is 39521215.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51212587) and next prime (51212599).

It can be written as a sum of positive squares in 2 ways, for example, as 4809249 + 46403344 = 2193^2 + 6812^2 .

It is a cyclic number.

It is not a de Polignac number, because 51212593 - 2⁵ = 51212561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51212599) 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, 8308 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (12809097).

Almost surely, 2^51212593 is an apocalyptic number.

It is an amenable number.

51212593 is a deficient number, since it is larger than the sum of its proper divisors (23795).

51212593 is a wasteful number, since it uses less digits than its factorization.

51212593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23794.

The product of its digits is 2700, while the sum is 28.

The square root of 51212593 is about 7156.2974365240. The cubic root of 51212593 is about 371.3575476977.

The spelling of 51212593 in words is "fifty-one million, two hundred twelve thousand, five hundred ninety-three".