1465021 has 2 divisors, whose sum is σ = 1465022. Its totient is φ = 1465020.

The previous prime is 1465019. The next prime is 1465027. The reversal of 1465021 is 1205641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 12996 = 1205^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1465021 - 2¹ = 1465019 is a prime.

Together with 1465019, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1465021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1465027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732510 + 732511.

It is an arithmetic number, because the mean of its divisors is an integer number (732511).

2^1465021 is an apocalyptic number.

It is an amenable number.

1465021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465021 is an equidigital number, since it uses as much as digits as its factorization.

1465021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1465021 is about 1210.3805186800. The cubic root of 1465021 is about 113.5746176264.

The spelling of 1465021 in words is "one million, four hundred sixty-five thousand, twenty-one".