51057413 has 4 divisors (see below), whose sum is σ = 55699008. Its totient is φ = 46415820.

The previous prime is 51057397. The next prime is 51057451. The reversal of 51057413 is 31475015.

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 not a de Polignac number, because 51057413 - 2⁴ = 51057397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057473) 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, 2320781 + ... + 2320802.

It is an arithmetic number, because the mean of its divisors is an integer number (13924752).

Almost surely, 2^51057413 is an apocalyptic number.

It is an amenable number.

51057413 is a deficient number, since it is larger than the sum of its proper divisors (4641595).

51057413 is a wasteful number, since it uses less digits than its factorization.

51057413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641594.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 51057413 is about 7145.4470119091. The cubic root of 51057413 is about 370.9820829615.

The spelling of 51057413 in words is "fifty-one million, fifty-seven thousand, four hundred thirteen".