249822057 has 8 divisors (see below), whose sum is σ = 334424160. Its totient is φ = 165884000.

The previous prime is 249822047. The next prime is 249822077. The reversal of 249822057 is 750228942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249822057 - 2⁶ = 249821993 is a prime.

It is a super-2 number, since 2×249822057² = 124822120327422498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249822007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165132 + ... + 166637.

It is an arithmetic number, because the mean of its divisors is an integer number (41803020).

Almost surely, 2^249822057 is an apocalyptic number.

It is an amenable number.

249822057 is a deficient number, since it is larger than the sum of its proper divisors (84602103).

249822057 is a wasteful number, since it uses less digits than its factorization.

249822057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332023.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 249822057 is about 15805.7602474541. The cubic root of 249822057 is about 629.8110267180.

The spelling of 249822057 in words is "two hundred forty-nine million, eight hundred twenty-two thousand, fifty-seven".