36313561 has 2 divisors, whose sum is σ = 36313562. Its totient is φ = 36313560.

The previous prime is 36313523. The next prime is 36313591. The reversal of 36313561 is 16531363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21344400 + 14969161 = 4620^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 36313561 - 2¹³ = 36305369 is a prime.

It is not a weakly prime, because it can be changed into another prime (36313591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18156780 + 18156781.

It is an arithmetic number, because the mean of its divisors is an integer number (18156781).

Almost surely, 2^36313561 is an apocalyptic number.

It is an amenable number.

36313561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36313561 is an equidigital number, since it uses as much as digits as its factorization.

36313561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 36313561 is about 6026.0734313481. The cubic root of 36313561 is about 331.1486175560.

It can be divided in two parts, 363 and 13561, that added together give a square (13924 = 118²).

The spelling of 36313561 in words is "thirty-six million, three hundred thirteen thousand, five hundred sixty-one".