1213552045 has 8 divisors (see below), whose sum is σ = 1469623320. Its totient is φ = 961934400.

The previous prime is 1213552037. The next prime is 1213552057. The reversal of 1213552045 is 5402553121.

It can be written as a sum of positive squares in 4 ways, for example, as 460488681 + 753063364 = 21459^2 + 27442^2 .

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

It is not a de Polignac number, because 1213552045 - 2³ = 1213552037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112806 + ... + 1113895.

It is an arithmetic number, because the mean of its divisors is an integer number (183702915).

Almost surely, 2^1213552045 is an apocalyptic number.

It is an amenable number.

1213552045 is a deficient number, since it is larger than the sum of its proper divisors (256071275).

1213552045 is a wasteful number, since it uses less digits than its factorization.

1213552045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226815.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1213552045 is about 34836.0739033548. The cubic root of 1213552045 is about 1066.6439363103.

The spelling of 1213552045 in words is "one billion, two hundred thirteen million, five hundred fifty-two thousand, forty-five".