51585413 has 8 divisors (see below), whose sum is σ = 56954016. Its totient is φ = 46330000.

The previous prime is 51585397. The next prime is 51585419. The reversal of 51585413 is 31458515.

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 51585413 - 2⁴ = 51585397 is a prime.

It is a super-2 number, since 2×51585413² = 5322109668761138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51585413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51585419) 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, 27338 + ... + 29163.

It is an arithmetic number, because the mean of its divisors is an integer number (7119252).

Almost surely, 2^51585413 is an apocalyptic number.

It is an amenable number.

51585413 is a deficient number, since it is larger than the sum of its proper divisors (5368603).

51585413 is a wasteful number, since it uses less digits than its factorization.

51585413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56595.

The product of its digits is 12000, while the sum is 32.

The square root of 51585413 is about 7182.2985874997. The cubic root of 51585413 is about 372.2565121979.

The spelling of 51585413 in words is "fifty-one million, five hundred eighty-five thousand, four hundred thirteen".