2544066545 has 4 divisors (see below), whose sum is σ = 3052879860. Its totient is φ = 2035253232.

The previous prime is 2544066527. The next prime is 2544066559. The reversal of 2544066545 is 5456604452.

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 1732557376 + 811509169 = 41624^2 + 28487^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544066545 - 2¹⁴ = 2544050161 is a prime.

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, 254406650 + ... + 254406659.

It is an arithmetic number, because the mean of its divisors is an integer number (763219965).

Almost surely, 2^2544066545 is an apocalyptic number.

It is an amenable number.

2544066545 is a deficient number, since it is larger than the sum of its proper divisors (508813315).

2544066545 is an equidigital number, since it uses as much as digits as its factorization.

2544066545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508813314.

The product of its (nonzero) digits is 576000, while the sum is 41.

The square root of 2544066545 is about 50438.7405175823. The cubic root of 2544066545 is about 1365.1367420159.

The spelling of 2544066545 in words is "two billion, five hundred forty-four million, sixty-six thousand, five hundred forty-five".