249020559 has 6 divisors (see below), whose sum is σ = 359696376. Its totient is φ = 166013700.

The previous prime is 249020549. The next prime is 249020579. The reversal of 249020559 is 955020942.

It is a happy number.

It is not a de Polignac number, because 249020559 - 2⁴ = 249020543 is a prime.

It is a super-2 number, since 2×249020559² = 124022477609344962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249020509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13834467 + ... + 13834484.

It is an arithmetic number, because the mean of its divisors is an integer number (59949396).

Almost surely, 2^249020559 is an apocalyptic number.

249020559 is a deficient number, since it is larger than the sum of its proper divisors (110675817).

249020559 is a wasteful number, since it uses less digits than its factorization.

249020559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27668957 (or 27668954 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 249020559 is about 15780.3852614567. The cubic root of 249020559 is about 629.1367693603.

The spelling of 249020559 in words is "two hundred forty-nine million, twenty thousand, five hundred fifty-nine".