1244555245 has 8 divisors (see below), whose sum is σ = 1517949720. Its totient is φ = 979321920.

The previous prime is 1244555201. The next prime is 1244555267. The reversal of 1244555245 is 5425554421.

It can be written as a sum of positive squares in 4 ways, for example, as 70190884 + 1174364361 = 8378^2 + 34269^2 .

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

It is not a de Polignac number, because 1244555245 - 2¹⁷ = 1244424173 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, 2039950 + ... + 2040559.

It is an arithmetic number, because the mean of its divisors is an integer number (189743715).

Almost surely, 2^1244555245 is an apocalyptic number.

It is an amenable number.

1244555245 is a deficient number, since it is larger than the sum of its proper divisors (273394475).

1244555245 is an equidigital number, since it uses as much as digits as its factorization.

1244555245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080575.

The product of its digits is 160000, while the sum is 37.

The square root of 1244555245 is about 35278.2545628323. The cubic root of 1244555245 is about 1075.6510194006.

The spelling of 1244555245 in words is "one billion, two hundred forty-four million, five hundred fifty-five thousand, two hundred forty-five".