36506881 has 2 divisors, whose sum is σ = 36506882. Its totient is φ = 36506880.

The previous prime is 36506863. The next prime is 36506887. The reversal of 36506881 is 18860563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 25281 = 6040^2 + 159^2 .

It is an emirp because it is prime and its reverse (18860563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36506881 - 2⁵ = 36506849 is a prime.

It is a super-2 number, since 2×36506881² = 2665504720696322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36506881.

It is not a weakly prime, because it can be changed into another prime (36506887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18253440 + 18253441.

It is an arithmetic number, because the mean of its divisors is an integer number (18253441).

Almost surely, 2^36506881 is an apocalyptic number.

It is an amenable number.

36506881 is a deficient number, since it is larger than the sum of its proper divisors (1).

36506881 is an equidigital number, since it uses as much as digits as its factorization.

36506881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 36506881 is about 6042.0924355723. The cubic root of 36506881 is about 331.7352155253.

The spelling of 36506881 in words is "thirty-six million, five hundred six thousand, eight hundred eighty-one".