1511220045 has 16 divisors (see below), whose sum is σ = 2483303040. Its totient is φ = 784200384.

The previous prime is 1511220031. The next prime is 1511220097. The reversal of 1511220045 is 5400221151.

It is not a de Polignac number, because 1511220045 - 2⁵ = 1511220013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360905 + ... + 1362014.

It is an arithmetic number, because the mean of its divisors is an integer number (155206440).

Almost surely, 2^1511220045 is an apocalyptic number.

1511220045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1511220045 is a deficient number, since it is larger than the sum of its proper divisors (972082995).

1511220045 is a wasteful number, since it uses less digits than its factorization.

1511220045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722964.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1511220045 is about 38874.4137576376. The cubic root of 1511220045 is about 1147.5613211898.

Adding to 1511220045 its reverse (5400221151), we get a palindrome (6911441196).

The spelling of 1511220045 in words is "one billion, five hundred eleven million, two hundred twenty thousand, forty-five".