51144413 has 8 divisors (see below), whose sum is σ = 53091840. Its totient is φ = 49232880.

The previous prime is 51144403. The next prime is 51144419. The reversal of 51144413 is 31444115.

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 51144413 - 2⁶ = 51144349 is a prime.

It is a super-2 number, since 2×51144413² = 5231501962229138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144419) 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, 6053 + ... + 11786.

It is an arithmetic number, because the mean of its divisors is an integer number (6636480).

Almost surely, 2^51144413 is an apocalyptic number.

It is an amenable number.

51144413 is a deficient number, since it is larger than the sum of its proper divisors (1947427).

51144413 is a wasteful number, since it uses less digits than its factorization.

51144413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17947.

The product of its digits is 960, while the sum is 23.

The square root of 51144413 is about 7151.5322134491. The cubic root of 51144413 is about 371.1926767786.

Adding to 51144413 its reverse (31444115), we get a palindrome (82588528).

The spelling of 51144413 in words is "fifty-one million, one hundred forty-four thousand, four hundred thirteen".