36215551 has 2 divisors, whose sum is σ = 36215552. Its totient is φ = 36215550.

The previous prime is 36215549. The next prime is 36215567. The reversal of 36215551 is 15551263.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36215551 - 2¹ = 36215549 is a prime.

It is a super-2 number, since 2×36215551² = 2623132268467202, which contains 22 as substring.

Together with 36215549, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36215581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18107775 + 18107776.

It is an arithmetic number, because the mean of its divisors is an integer number (18107776).

Almost surely, 2^36215551 is an apocalyptic number.

36215551 is a deficient number, since it is larger than the sum of its proper divisors (1).

36215551 is an equidigital number, since it uses as much as digits as its factorization.

36215551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 28.

The square root of 36215551 is about 6017.9357756626. The cubic root of 36215551 is about 330.8504266657.

The spelling of 36215551 in words is "thirty-six million, two hundred fifteen thousand, five hundred fifty-one".