1522221513 has 8 divisors (see below), whose sum is σ = 2099616000. Its totient is φ = 979820688.

The previous prime is 1522221509. The next prime is 1522221523. The reversal of 1522221513 is 3151222251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1522221513 - 2² = 1522221509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1522221523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8748313 + ... + 8748486.

It is an arithmetic number, because the mean of its divisors is an integer number (262452000).

Almost surely, 2^1522221513 is an apocalyptic number.

It is an amenable number.

1522221513 is a deficient number, since it is larger than the sum of its proper divisors (577394487).

1522221513 is a wasteful number, since it uses less digits than its factorization.

1522221513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496831.

The product of its digits is 1200, while the sum is 24.

The square root of 1522221513 is about 39015.6572801228. The cubic root of 1522221513 is about 1150.3392856497.

Adding to 1522221513 its reverse (3151222251), we get a palindrome (4673443764).

It can be divided in two parts, 152222 and 1513, that added together give a triangular number (153735 = T₅₅₄).

The spelling of 1522221513 in words is "one billion, five hundred twenty-two million, two hundred twenty-one thousand, five hundred thirteen".