36501881 has 12 divisors (see below), whose sum is σ = 39942756. Its totient is φ = 33159840.

The previous prime is 36501863. The next prime is 36501889. The reversal of 36501881 is 18810563.

It can be written as a sum of positive squares in 2 ways, for example, as 4239481 + 32262400 = 2059^2 + 5680^2 .

It is not a de Polignac number, because 36501881 - 2¹⁴ = 36485497 is a prime.

It is a super-2 number, since 2×36501881² = 2664774633076322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36501889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65255 + ... + 65811.

It is an arithmetic number, because the mean of its divisors is an integer number (3328563).

Almost surely, 2^36501881 is an apocalyptic number.

It is an amenable number.

36501881 is a deficient number, since it is larger than the sum of its proper divisors (3440875).

36501881 is an equidigital number, since it uses as much as digits as its factorization.

36501881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 36501881 is about 6041.6786574594. The cubic root of 36501881 is about 331.7200699622.

The spelling of 36501881 in words is "thirty-six million, five hundred one thousand, eight hundred eighty-one".