51744081 has 4 divisors (see below), whose sum is σ = 68992112. Its totient is φ = 34496052.

The previous prime is 51744071. The next prime is 51744097. The reversal of 51744081 is 18044715.

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 51744081 - 2¹⁵ = 51711313 is a prime.

It is a super-2 number, since 2×51744081² = 5354899837069122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51744061) 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, 8624011 + ... + 8624016.

It is an arithmetic number, because the mean of its divisors is an integer number (17248028).

Almost surely, 2^51744081 is an apocalyptic number.

It is an amenable number.

51744081 is a deficient number, since it is larger than the sum of its proper divisors (17248031).

51744081 is a wasteful number, since it uses less digits than its factorization.

51744081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17248030.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 51744081 is about 7193.3358742658. The cubic root of 51744081 is about 372.6377875620.

Adding to 51744081 its reverse (18044715), we get a palindrome (69788796).

The spelling of 51744081 in words is "fifty-one million, seven hundred forty-four thousand, eighty-one".