1045201555 has 4 divisors (see below), whose sum is σ = 1254241872. Its totient is φ = 836161240.

The previous prime is 1045201543. The next prime is 1045201601. The reversal of 1045201555 is 5551025401.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1045201555 - 2¹⁹ = 1044677267 is a prime.

It is a Duffinian number.

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, 104520151 + ... + 104520160.

It is an arithmetic number, because the mean of its divisors is an integer number (313560468).

Almost surely, 2^1045201555 is an apocalyptic number.

1045201555 is a deficient number, since it is larger than the sum of its proper divisors (209040317).

1045201555 is an equidigital number, since it uses as much as digits as its factorization.

1045201555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209040316.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1045201555 is about 32329.5770928108. The cubic root of 1045201555 is about 1014.8456995661.

Adding to 1045201555 its reverse (5551025401), we get a palindrome (6596226956).

The spelling of 1045201555 in words is "one billion, forty-five million, two hundred one thousand, five hundred fifty-five".