36771521 has 2 divisors, whose sum is σ = 36771522. Its totient is φ = 36771520.

The previous prime is 36771491. The next prime is 36771523. The reversal of 36771521 is 12517763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 8202496 = 5345^2 + 2864^2 .

It is a cyclic number.

It is not a de Polignac number, because 36771521 - 2²² = 32577217 is a prime.

Together with 36771523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36771523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18385760 + 18385761.

It is an arithmetic number, because the mean of its divisors is an integer number (18385761).

Almost surely, 2^36771521 is an apocalyptic number.

It is an amenable number.

36771521 is a deficient number, since it is larger than the sum of its proper divisors (1).

36771521 is an equidigital number, since it uses as much as digits as its factorization.

36771521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 36771521 is about 6063.9525888648. The cubic root of 36771521 is about 332.5348741381.

The spelling of 36771521 in words is "thirty-six million, seven hundred seventy-one thousand, five hundred twenty-one".