36155881 has 4 divisors (see below), whose sum is σ = 36169600. Its totient is φ = 36142164.

The previous prime is 36155857. The next prime is 36155887. The reversal of 36155881 is 18855163.

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 a cyclic number.

It is not a de Polignac number, because 36155881 - 2¹³ = 36147689 is a prime.

It is a super-2 number, since 2×36155881² = 2614495461772322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36155881.

It is not an unprimeable number, because it can be changed into a prime (36155887) 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, 1521 + ... + 8638.

It is an arithmetic number, because the mean of its divisors is an integer number (9042400).

Almost surely, 2^36155881 is an apocalyptic number.

It is an amenable number.

36155881 is a deficient number, since it is larger than the sum of its proper divisors (13719).

36155881 is a wasteful number, since it uses less digits than its factorization.

36155881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718.

The product of its digits is 28800, while the sum is 37.

The square root of 36155881 is about 6012.9760518399. The cubic root of 36155881 is about 330.6686198930.

The spelling of 36155881 in words is "thirty-six million, one hundred fifty-five thousand, eight hundred eighty-one".