51401013 has 16 divisors (see below), whose sum is σ = 72887040. Its totient is φ = 32109056.

The previous prime is 51400991. The next prime is 51401027. The reversal of 51401013 is 31010415.

It is not a de Polignac number, because 51401013 - 2⁹ = 51400501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51400983 and 51401001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51401083) 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, 10081 + ... + 14297.

It is an arithmetic number, because the mean of its divisors is an integer number (4555440).

Almost surely, 2^51401013 is an apocalyptic number.

It is an amenable number.

51401013 is a deficient number, since it is larger than the sum of its proper divisors (21486027).

51401013 is a wasteful number, since it uses less digits than its factorization.

51401013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476.

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

The square root of 51401013 is about 7169.4499789035. The cubic root of 51401013 is about 371.8124198816.

Adding to 51401013 its reverse (31010415), we get a palindrome (82411428).

The spelling of 51401013 in words is "fifty-one million, four hundred one thousand, thirteen".