13442557 has 12 divisors (see below), whose sum is σ = 14813280. Its totient is φ = 12173832.

The previous prime is 13442537. The next prime is 13442591. The reversal of 13442557 is 75524431.

It is not a de Polignac number, because 13442557 - 2¹⁵ = 13409789 is a prime.

It is a Duffinian number.

13442557 is a Rhonda number in base 10.

Its product of digits (16800) is a multiple of the sum of its prime factors (1680).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7494 + ... + 9112.

It is an arithmetic number, because the mean of its divisors is an integer number (1234440).

Almost surely, 2^13442557 is an apocalyptic number.

It is an amenable number.

13442557 is a deficient number, since it is larger than the sum of its proper divisors (1370723).

13442557 is a wasteful number, since it uses less digits than its factorization.

13442557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 1661 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 13442557 is about 3666.4092788449. The cubic root of 13442557 is about 237.7719551390.

Adding to 13442557 its reverse (75524431), we get a palindrome (88966988).

The spelling of 13442557 in words is "thirteen million, four hundred forty-two thousand, five hundred fifty-seven".