36424561 has 2 divisors, whose sum is σ = 36424562. Its totient is φ = 36424560.

The previous prime is 36424559. The next prime is 36424573. The reversal of 36424561 is 16542463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 950625 = 5956^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 36424561 - 2¹ = 36424559 is a prime.

Together with 36424559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36424541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18212280 + 18212281.

It is an arithmetic number, because the mean of its divisors is an integer number (18212281).

Almost surely, 2^36424561 is an apocalyptic number.

It is an amenable number.

36424561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36424561 is an equidigital number, since it uses as much as digits as its factorization.

36424561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 36424561 is about 6035.2763814096. The cubic root of 36424561 is about 331.4856827063.

The spelling of 36424561 in words is "thirty-six million, four hundred twenty-four thousand, five hundred sixty-one".