51163401 has 16 divisors (see below), whose sum is σ = 70329600. Its totient is φ = 33067008.

The previous prime is 51163397. The next prime is 51163403. The reversal of 51163401 is 10436115.

It is not a de Polignac number, because 51163401 - 2² = 51163397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51163403) 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, 13705 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (4395600).

Almost surely, 2^51163401 is an apocalyptic number.

It is an amenable number.

51163401 is a deficient number, since it is larger than the sum of its proper divisors (19166199).

51163401 is a wasteful number, since it uses less digits than its factorization.

51163401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51163401 is about 7152.8596379350. The cubic root of 51163401 is about 371.2386077290.

Adding to 51163401 its reverse (10436115), we get a palindrome (61599516).

The spelling of 51163401 in words is "fifty-one million, one hundred sixty-three thousand, four hundred one".