2545391879 has 4 divisors (see below), whose sum is σ = 2545581360. Its totient is φ = 2545202400.

The previous prime is 2545391873. The next prime is 2545391881. The reversal of 2545391879 is 9781935452.

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 2545391879 - 2¹² = 2545387783 is a prime.

It is a super-3 number, since 3×2545391879³ (a number of 29 digits) contains 333 as substring.

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 2545391879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545391873) 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, 72914 + ... + 102015.

It is an arithmetic number, because the mean of its divisors is an integer number (636395340).

Almost surely, 2^2545391879 is an apocalyptic number.

2545391879 is a deficient number, since it is larger than the sum of its proper divisors (189481).

2545391879 is a wasteful number, since it uses less digits than its factorization.

2545391879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189480.

The product of its digits is 2721600, while the sum is 53.

The square root of 2545391879 is about 50451.8768630068. The cubic root of 2545391879 is about 1365.3737573112.

The spelling of 2545391879 in words is "two billion, five hundred forty-five million, three hundred ninety-one thousand, eight hundred seventy-nine".