36542391 has 4 divisors (see below), whose sum is σ = 48723192. Its totient is φ = 24361592.

The previous prime is 36542381. The next prime is 36542393. The reversal of 36542391 is 19324563.

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 36542391 - 2¹⁰ = 36541367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36542393) 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, 6090396 + ... + 6090401.

It is an arithmetic number, because the mean of its divisors is an integer number (12180798).

Almost surely, 2^36542391 is an apocalyptic number.

36542391 is a deficient number, since it is larger than the sum of its proper divisors (12180801).

36542391 is a wasteful number, since it uses less digits than its factorization.

36542391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180800.

The product of its digits is 19440, while the sum is 33.

The square root of 36542391 is about 6045.0302728771. The cubic root of 36542391 is about 331.8427395484.

The spelling of 36542391 in words is "thirty-six million, five hundred forty-two thousand, three hundred ninety-one".