1521224066 has 16 divisors (see below), whose sum is σ = 2344469400. Its totient is φ = 739845120.

The previous prime is 1521224059. The next prime is 1521224099. The reversal of 1521224066 is 6604221251.

It can be written as a sum of positive squares in 4 ways, for example, as 1103634841 + 417589225 = 33221^2 + 20435^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110 + ... + 55158.

Almost surely, 2^1521224066 is an apocalyptic number.

1521224066 is a deficient number, since it is larger than the sum of its proper divisors (823245334).

1521224066 is a wasteful number, since it uses less digits than its factorization.

1521224066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55429.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1521224066 is about 39002.8725352377. The cubic root of 1521224066 is about 1150.0879746183.

The spelling of 1521224066 in words is "one billion, five hundred twenty-one million, two hundred twenty-four thousand, sixty-six".