13542813 has 6 divisors (see below), whose sum is σ = 19561854. Its totient is φ = 9028536.

The previous prime is 13542811. The next prime is 13542817. The reversal of 13542813 is 31824531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13527684 + 15129 = 3678^2 + 123^2 .

It is not a de Polignac number, because 13542813 - 2¹ = 13542811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752370 + ... + 752387.

It is an arithmetic number, because the mean of its divisors is an integer number (3260309).

Almost surely, 2^13542813 is an apocalyptic number.

It is an amenable number.

13542813 is a deficient number, since it is larger than the sum of its proper divisors (6019041).

13542813 is a wasteful number, since it uses less digits than its factorization.

13542813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504763 (or 1504760 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 13542813 is about 3680.0561137026. The cubic root of 13542813 is about 238.3616010722.

The spelling of 13542813 in words is "thirteen million, five hundred forty-two thousand, eight hundred thirteen".