1545221106 has 48 divisors (see below), whose sum is σ = 3933296640. Its totient is φ = 432228960.

The previous prime is 1545221089. The next prime is 1545221159. The reversal of 1545221106 is 6011225451.

1545221106 is a `hidden beast` number, since 1 + 545 + 2 + 2 + 110 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1545221106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297586 + ... + 302733.

It is an arithmetic number, because the mean of its divisors is an integer number (81943680).

Almost surely, 2^1545221106 is an apocalyptic number.

1545221106 is an abundant number, since it is smaller than the sum of its proper divisors (2388075534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1545221106 is a wasteful number, since it uses less digits than its factorization.

1545221106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600351 (or 600348 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1545221106 is about 39309.3005025528. The cubic root of 1545221106 is about 1156.1039290867.

Adding to 1545221106 its reverse (6011225451), we get a palindrome (7556446557).

The spelling of 1545221106 in words is "one billion, five hundred forty-five million, two hundred twenty-one thousand, one hundred six".