5245578399 has 4 divisors (see below), whose sum is σ = 6994104536. Its totient is φ = 3497052264.

The previous prime is 5245578391. The next prime is 5245578407. The reversal of 5245578399 is 9938755425.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (5245578391) and next prime (5245578407).

It is not a de Polignac number, because 5245578399 - 2³ = 5245578391 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 (5245578391) 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 in 3 ways as a sum of consecutive naturals, for example, 874263064 + ... + 874263069.

It is an arithmetic number, because the mean of its divisors is an integer number (1748526134).

Almost surely, 2^5245578399 is an apocalyptic number.

5245578399 is a deficient number, since it is larger than the sum of its proper divisors (1748526137).

5245578399 is a wasteful number, since it uses less digits than its factorization.

5245578399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748526136.

The product of its digits is 13608000, while the sum is 57.

The square root of 5245578399 is about 72426.3653582036. The cubic root of 5245578399 is about 1737.5252614998.

The spelling of 5245578399 in words is "five billion, two hundred forty-five million, five hundred seventy-eight thousand, three hundred ninety-nine".