51310401 has 16 divisors (see below), whose sum is σ = 71776896. Its totient is φ = 32541696.

The previous prime is 51310387. The next prime is 51310411. The reversal of 51310401 is 10401315.

It is not a de Polignac number, because 51310401 - 2⁹ = 51309889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51310411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11391 + ... + 15243.

It is an arithmetic number, because the mean of its divisors is an integer number (4486056).

Almost surely, 2^51310401 is an apocalyptic number.

It is an amenable number.

51310401 is a deficient number, since it is larger than the sum of its proper divisors (20466495).

51310401 is a wasteful number, since it uses less digits than its factorization.

51310401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51310401 is about 7163.1278782387. The cubic root of 51310401 is about 371.5938088623.

Adding to 51310401 its reverse (10401315), we get a palindrome (61711716).

The spelling of 51310401 in words is "fifty-one million, three hundred ten thousand, four hundred one".