36561091 has 8 divisors (see below), whose sum is σ = 42198624. Its totient is φ = 31027200.

The previous prime is 36561079. The next prime is 36561097. The reversal of 36561091 is 19016563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36561091 - 2¹⁷ = 36430019 is a prime.

It is a super-2 number, since 2×36561091² = 2673426750220562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36561097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25150 + ... + 26563.

It is an arithmetic number, because the mean of its divisors is an integer number (5274828).

Almost surely, 2^36561091 is an apocalyptic number.

36561091 is a deficient number, since it is larger than the sum of its proper divisors (5637533).

36561091 is a wasteful number, since it uses less digits than its factorization.

36561091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51821.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 36561091 is about 6046.5768001407. The cubic root of 36561091 is about 331.8993350151.

The spelling of 36561091 in words is "thirty-six million, five hundred sixty-one thousand, ninety-one".