35564021 has 2 divisors, whose sum is σ = 35564022. Its totient is φ = 35564020.

The previous prime is 35563963. The next prime is 35564027. The reversal of 35564021 is 12046553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34939921 + 624100 = 5911^2 + 790^2 .

It is an emirp because it is prime and its reverse (12046553) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35564021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35564027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17782010 + 17782011.

It is an arithmetic number, because the mean of its divisors is an integer number (17782011).

Almost surely, 2^35564021 is an apocalyptic number.

It is an amenable number.

35564021 is a deficient number, since it is larger than the sum of its proper divisors (1).

35564021 is an equidigital number, since it uses as much as digits as its factorization.

35564021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 35564021 is about 5963.5577468488. The cubic root of 35564021 is about 328.8543714832.

The spelling of 35564021 in words is "thirty-five million, five hundred sixty-four thousand, twenty-one".