13404057 has 16 divisors (see below), whose sum is σ = 18216000. Its totient is φ = 8766144.

The previous prime is 13404047. The next prime is 13404067. The reversal of 13404057 is 75040431.

13404057 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13404047) and next prime (13404067).

It is not a de Polignac number, because 13404057 - 2⁸ = 13403801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13404047) 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, 58419 + ... + 58647.

It is an arithmetic number, because the mean of its divisors is an integer number (1138500).

Almost surely, 2^13404057 is an apocalyptic number.

It is an amenable number.

13404057 is a deficient number, since it is larger than the sum of its proper divisors (4811943).

13404057 is a wasteful number, since it uses less digits than its factorization.

13404057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13404057 is about 3661.1551455791. The cubic root of 13404057 is about 237.5447420785.

Adding to 13404057 its reverse (75040431), we get a palindrome (88444488).

The spelling of 13404057 in words is "thirteen million, four hundred four thousand, fifty-seven".