54400013 has 4 divisors (see below), whose sum is σ = 54791520. Its totient is φ = 54008508.

The previous prime is 54399997. The next prime is 54400039. The reversal of 54400013 is 31000445.

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 a cyclic number.

It is not a de Polignac number, because 54400013 - 2⁴ = 54399997 is a prime.

It is a super-2 number, since 2×54400013² = 5918722828800338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54399964 and 54400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54400613) 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, 195545 + ... + 195822.

It is an arithmetic number, because the mean of its divisors is an integer number (13697880).

Almost surely, 2^54400013 is an apocalyptic number.

It is an amenable number.

54400013 is a deficient number, since it is larger than the sum of its proper divisors (391507).

54400013 is a wasteful number, since it uses less digits than its factorization.

54400013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391506.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 54400013 is about 7375.6364471142. The cubic root of 54400013 is about 378.9073250569.

Adding to 54400013 its reverse (31000445), we get a palindrome (85400458).

The spelling of 54400013 in words is "fifty-four million, four hundred thousand, thirteen".