249315355 has 4 divisors (see below), whose sum is σ = 299178432. Its totient is φ = 199452280.

The previous prime is 249315347. The next prime is 249315427. The reversal of 249315355 is 553513942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553513942 = 2 ⋅276756971.

It is not a de Polignac number, because 249315355 - 2³ = 249315347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24931531 + ... + 24931540.

It is an arithmetic number, because the mean of its divisors is an integer number (74794608).

Almost surely, 2^249315355 is an apocalyptic number.

249315355 is a deficient number, since it is larger than the sum of its proper divisors (49863077).

249315355 is an equidigital number, since it uses as much as digits as its factorization.

249315355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49863076.

The product of its digits is 81000, while the sum is 37.

The square root of 249315355 is about 15789.7230818023. The cubic root of 249315355 is about 629.3849334280.

The spelling of 249315355 in words is "two hundred forty-nine million, three hundred fifteen thousand, three hundred fifty-five".