248945615 has 4 divisors (see below), whose sum is σ = 298734744. Its totient is φ = 199156488.

The previous prime is 248945591. The next prime is 248945623. The reversal of 248945615 is 516549842.

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

It is a cyclic number.

It is not a de Polignac number, because 248945615 - 2¹² = 248941519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24894557 + ... + 24894566.

It is an arithmetic number, because the mean of its divisors is an integer number (74683686).

Almost surely, 2^248945615 is an apocalyptic number.

248945615 is a deficient number, since it is larger than the sum of its proper divisors (49789129).

248945615 is an equidigital number, since it uses as much as digits as its factorization.

248945615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49789128.

The product of its digits is 345600, while the sum is 44.

The square root of 248945615 is about 15778.0104892854. The cubic root of 248945615 is about 629.0736490608.

The spelling of 248945615 in words is "two hundred forty-eight million, nine hundred forty-five thousand, six hundred fifteen".