13523901 has 4 divisors (see below), whose sum is σ = 18031872. Its totient is φ = 9015932.

The previous prime is 13523899. The next prime is 13523903. The reversal of 13523901 is 10932531.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (13523899) and next prime (13523903).

It is a cyclic number.

It is not a de Polignac number, because 13523901 - 2¹ = 13523899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13523903) 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, 2253981 + ... + 2253986.

It is an arithmetic number, because the mean of its divisors is an integer number (4507968).

Almost surely, 2^13523901 is an apocalyptic number.

It is an amenable number.

13523901 is a deficient number, since it is larger than the sum of its proper divisors (4507971).

13523901 is an equidigital number, since it uses as much as digits as its factorization.

13523901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507970.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 13523901 is about 3677.4856899790. The cubic root of 13523901 is about 238.2505952176.

It can be divided in two parts, 1352 and 3901, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 13523901 in words is "thirteen million, five hundred twenty-three thousand, nine hundred one".