2545561607 has 4 divisors (see below), whose sum is σ = 2547751560. Its totient is φ = 2543371656.

The previous prime is 2545561597. The next prime is 2545561609. The reversal of 2545561607 is 7061655452.

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

It is a cyclic number.

It is not a de Polignac number, because 2545561607 - 2²⁰ = 2544513031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545561609) 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, 1093232 + ... + 1095557.

It is an arithmetic number, because the mean of its divisors is an integer number (636937890).

Almost surely, 2^2545561607 is an apocalyptic number.

2545561607 is a deficient number, since it is larger than the sum of its proper divisors (2189953).

2545561607 is a wasteful number, since it uses less digits than its factorization.

2545561607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189952.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 2545561607 is about 50453.5589131233. The cubic root of 2545561607 is about 1365.4041045711.

The spelling of 2545561607 in words is "two billion, five hundred forty-five million, five hundred sixty-one thousand, six hundred seven".