1479564521 has 2 divisors, whose sum is σ = 1479564522. Its totient is φ = 1479564520.

The previous prime is 1479564503. The next prime is 1479564607. The reversal of 1479564521 is 1254659741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1322413225 + 157151296 = 36365^2 + 12536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1479564521 is a prime.

It is a super-2 number, since 2×1479564521² = 4378222343603918882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1479564421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739782260 + 739782261.

It is an arithmetic number, because the mean of its divisors is an integer number (739782261).

Almost surely, 2^1479564521 is an apocalyptic number.

It is an amenable number.

1479564521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479564521 is an equidigital number, since it uses as much as digits as its factorization.

1479564521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 1479564521 is about 38465.1078381434. The cubic root of 1479564521 is about 1139.4920587761.

The spelling of 1479564521 in words is "one billion, four hundred seventy-nine million, five hundred sixty-four thousand, five hundred twenty-one".