1479221521 has 2 divisors, whose sum is σ = 1479221522. Its totient is φ = 1479221520.

The previous prime is 1479221479. The next prime is 1479221533. The reversal of 1479221521 is 1251229741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420913025 + 58308496 = 37695^2 + 7636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1479221521 - 2²⁹ = 942350609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1479221551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739610760 + 739610761.

It is an arithmetic number, because the mean of its divisors is an integer number (739610761).

Almost surely, 2^1479221521 is an apocalyptic number.

It is an amenable number.

1479221521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479221521 is an equidigital number, since it uses as much as digits as its factorization.

1479221521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 34.

The square root of 1479221521 is about 38460.6489934842. The cubic root of 1479221521 is about 1139.4039977336.

The spelling of 1479221521 in words is "one billion, four hundred seventy-nine million, two hundred twenty-one thousand, five hundred twenty-one".