248861505 has 16 divisors (see below), whose sum is σ = 398450880. Its totient is φ = 132635328.

The previous prime is 248861491. The next prime is 248861537. The reversal of 248861505 is 505168842.

248861505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 248861505 - 2⁴ = 248861489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21031 + ... + 30659.

It is an arithmetic number, because the mean of its divisors is an integer number (24903180).

Almost surely, 2^248861505 is an apocalyptic number.

It is an amenable number.

248861505 is a deficient number, since it is larger than the sum of its proper divisors (149589375).

248861505 is a wasteful number, since it uses less digits than its factorization.

248861505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11360.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 248861505 is about 15775.3448456761. The cubic root of 248861505 is about 629.0027937661.

The spelling of 248861505 in words is "two hundred forty-eight million, eight hundred sixty-one thousand, five hundred five".