36001855 has 8 divisors (see below), whose sum is σ = 43237872. Its totient is φ = 28777728.

The previous prime is 36001853. The next prime is 36001883. The reversal of 36001855 is 55810063.

36001855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

36001855 is a nontrivial binomial coefficient, being equal to C(8486, 2).

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

It is a cyclic number.

It is not a de Polignac number, because 36001855 - 2¹ = 36001853 is a prime.

It is a super-2 number, since 2×36001855² = 2592267126882050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36001853) 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 7 ways as a sum of consecutive naturals, for example, 6364 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (5404734).

Almost surely, 2^36001855 is an apocalyptic number.

36001855 is the 8485-th triangular number and also the 4243-rd hexagonal number.

36001855 is the 2829-th centered nonagonal number.

36001855 is a deficient number, since it is larger than the sum of its proper divisors (7236017).

36001855 is a wasteful number, since it uses less digits than its factorization.

36001855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 36001855 is about 6000.1545813421. The cubic root of 36001855 is about 330.1983961578.

It can be divided in two parts, 36001 and 855, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 36001855 in words is "thirty-six million, one thousand, eight hundred fifty-five".