36491551 has 2 divisors, whose sum is σ = 36491552. Its totient is φ = 36491550.

The previous prime is 36491549. The next prime is 36491569. The reversal of 36491551 is 15519463.

36491551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36491551 - 2¹ = 36491549 is a prime.

Together with 36491549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36497551) 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 as a sum of consecutive naturals, namely, 18245775 + 18245776.

It is an arithmetic number, because the mean of its divisors is an integer number (18245776).

Almost surely, 2^36491551 is an apocalyptic number.

36491551 is a deficient number, since it is larger than the sum of its proper divisors (1).

36491551 is an equidigital number, since it uses as much as digits as its factorization.

36491551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 36491551 is about 6040.8237021122. The cubic root of 36491551 is about 331.6887748479.

The spelling of 36491551 in words is "thirty-six million, four hundred ninety-one thousand, five hundred fifty-one".