2545473923 has 2 divisors, whose sum is σ = 2545473924. Its totient is φ = 2545473922.

The previous prime is 2545473919. The next prime is 2545473929. The reversal of 2545473923 is 3293745452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545473923 - 2² = 2545473919 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2545473929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272736961 + 1272736962.

It is an arithmetic number, because the mean of its divisors is an integer number (1272736962).

Almost surely, 2^2545473923 is an apocalyptic number.

2545473923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545473923 is an equidigital number, since it uses as much as digits as its factorization.

2545473923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 44.

The square root of 2545473923 is about 50452.6899481088. The cubic root of 2545473923 is about 1365.3884268954.

The spelling of 2545473923 in words is "two billion, five hundred forty-five million, four hundred seventy-three thousand, nine hundred twenty-three".