2245540505557 has 4 divisors (see below), whose sum is σ = 2245545317836. Its totient is φ = 2245535693280.

The previous prime is 2245540505513. The next prime is 2245540505561. The reversal of 2245540505557 is 7555050455422.

It is a happy number.

2245540505557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1023352768881 + 1222187736676 = 1011609^2 + 1105526^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245540505557 - 2²⁷ = 2245406287829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2245540505557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245540505597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620744 + ... + 2667937.

It is an arithmetic number, because the mean of its divisors is an integer number (561386329459).

Almost surely, 2^{2245540505557} is an apocalyptic number.

It is an amenable number.

2245540505557 is a deficient number, since it is larger than the sum of its proper divisors (4812279).

2245540505557 is an equidigital number, since it uses as much as digits as its factorization.

2245540505557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812278.

The product of its (nonzero) digits is 7000000, while the sum is 49.

The spelling of 2245540505557 in words is "two trillion, two hundred forty-five billion, five hundred forty million, five hundred five thousand, five hundred fifty-seven".