500581397 has 4 divisors (see below), whose sum is σ = 516729216. Its totient is φ = 484433580.

The previous prime is 500581387. The next prime is 500581409. The reversal of 500581397 is 793185005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 500581397 - 2¹⁰ = 500580373 is a prime.

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 500581397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500581307) 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, 8073863 + ... + 8073924.

It is an arithmetic number, because the mean of its divisors is an integer number (129182304).

Almost surely, 2^500581397 is an apocalyptic number.

It is an amenable number.

500581397 is a deficient number, since it is larger than the sum of its proper divisors (16147819).

500581397 is a wasteful number, since it uses less digits than its factorization.

500581397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147818.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 500581397 is about 22373.6764301265. The cubic root of 500581397 is about 794.0080435582.

The spelling of 500581397 in words is "five hundred million, five hundred eighty-one thousand, three hundred ninety-seven".