36121237 has 2 divisors, whose sum is σ = 36121238. Its totient is φ = 36121236.

The previous prime is 36121219. The next prime is 36121259. The reversal of 36121237 is 73212163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29495761 + 6625476 = 5431^2 + 2574^2 .

It is an emirp because it is prime and its reverse (73212163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36121237 - 2¹⁵ = 36088469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36121207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18060618 + 18060619.

It is an arithmetic number, because the mean of its divisors is an integer number (18060619).

Almost surely, 2^36121237 is an apocalyptic number.

It is an amenable number.

36121237 is a deficient number, since it is larger than the sum of its proper divisors (1).

36121237 is an equidigital number, since it uses as much as digits as its factorization.

36121237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 36121237 is about 6010.0945916017. The cubic root of 36121237 is about 330.5629723083.

The spelling of 36121237 in words is "thirty-six million, one hundred twenty-one thousand, two hundred thirty-seven".