51144401 has 12 divisors (see below), whose sum is σ = 64248576. Its totient is φ = 39852120.

The previous prime is 51144391. The next prime is 51144403. The reversal of 51144401 is 10444115.

It is not a de Polignac number, because 51144401 - 2²² = 46950097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51144403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29345 + ... + 31038.

It is an arithmetic number, because the mean of its divisors is an integer number (5354048).

Almost surely, 2^51144401 is an apocalyptic number.

It is an amenable number.

51144401 is a deficient number, since it is larger than the sum of its proper divisors (13104175).

51144401 is a wasteful number, since it uses less digits than its factorization.

51144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60412 (or 60401 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 51144401 is about 7151.5313744680. The cubic root of 51144401 is about 371.1926477477.

Adding to 51144401 its reverse (10444115), we get a palindrome (61588516).

The spelling of 51144401 in words is "fifty-one million, one hundred forty-four thousand, four hundred one".