36454021 has 2 divisors, whose sum is σ = 36454022. Its totient is φ = 36454020.

The previous prime is 36454013. The next prime is 36454037. The reversal of 36454021 is 12045463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34644996 + 1809025 = 5886^2 + 1345^2 .

It is an emirp because it is prime and its reverse (12045463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36454021 - 2³ = 36454013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36454051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18227010 + 18227011.

It is an arithmetic number, because the mean of its divisors is an integer number (18227011).

Almost surely, 2^36454021 is an apocalyptic number.

It is an amenable number.

36454021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36454021 is an equidigital number, since it uses as much as digits as its factorization.

36454021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 36454021 is about 6037.7165385599. The cubic root of 36454021 is about 331.5750266027.

Adding to 36454021 its reverse (12045463), we get a palindrome (48499484).

The spelling of 36454021 in words is "thirty-six million, four hundred fifty-four thousand, twenty-one".