13761091 has 4 divisors (see below), whose sum is σ = 13915800. Its totient is φ = 13606384.

The previous prime is 13761067. The next prime is 13761131. The reversal of 13761091 is 19016731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13761091 - 2⁷ = 13760963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13761001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77221 + ... + 77398.

It is an arithmetic number, because the mean of its divisors is an integer number (3478950).

Almost surely, 2^13761091 is an apocalyptic number.

13761091 is a deficient number, since it is larger than the sum of its proper divisors (154709).

13761091 is an equidigital number, since it uses as much as digits as its factorization.

13761091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154708.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 13761091 is about 3709.5944522279. The cubic root of 13761091 is about 239.6353896479.

It can be divided in two parts, 137610 and 91, that multiplied together give a triangular number (12522510 = T₅₀₀₄).

The spelling of 13761091 in words is "thirteen million, seven hundred sixty-one thousand, ninety-one".