1024564921 has 2 divisors, whose sum is σ = 1024564922. Its totient is φ = 1024564920.

The previous prime is 1024564841. The next prime is 1024564939. The reversal of 1024564921 is 1294654201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744471225 + 280093696 = 27285^2 + 16736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024564921 - 2²¹ = 1022467769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1024564951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512282460 + 512282461.

It is an arithmetic number, because the mean of its divisors is an integer number (512282461).

Almost surely, 2^1024564921 is an apocalyptic number.

It is an amenable number.

1024564921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024564921 is an equidigital number, since it uses as much as digits as its factorization.

1024564921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1024564921 is about 32008.8256735545. The cubic root of 1024564921 is about 1008.1221589295.

The spelling of 1024564921 in words is "one billion, twenty-four million, five hundred sixty-four thousand, nine hundred twenty-one".