1545221354 has 8 divisors (see below), whose sum is σ = 2333182368. Its totient is φ = 767493900.

The previous prime is 1545221339. The next prime is 1545221389. The reversal of 1545221354 is 4531225451.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545221354.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558012 + ... + 2558615.

It is an arithmetic number, because the mean of its divisors is an integer number (291647796).

Almost surely, 2^1545221354 is an apocalyptic number.

1545221354 is a deficient number, since it is larger than the sum of its proper divisors (787961014).

1545221354 is a wasteful number, since it uses less digits than its factorization.

1545221354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116780.

The product of its digits is 24000, while the sum is 32.

The square root of 1545221354 is about 39309.3036570225. The cubic root of 1545221354 is about 1156.1039909363.

The spelling of 1545221354 in words is "one billion, five hundred forty-five million, two hundred twenty-one thousand, three hundred fifty-four".