248997261 has 16 divisors (see below), whose sum is σ = 353687040. Its totient is φ = 155363760.

The previous prime is 248997257. The next prime is 248997263. The reversal of 248997261 is 162799842.

It is not a de Polignac number, because 248997261 - 2² = 248997257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248997261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248997263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21585 + ... + 31046.

It is an arithmetic number, because the mean of its divisors is an integer number (22105440).

Almost surely, 2^248997261 is an apocalyptic number.

It is an amenable number.

248997261 is a deficient number, since it is larger than the sum of its proper divisors (104689779).

248997261 is a wasteful number, since it uses less digits than its factorization.

248997261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52736.

The product of its digits is 435456, while the sum is 48.

The square root of 248997261 is about 15779.6470492847. The cubic root of 248997261 is about 629.1171483758.

The spelling of 248997261 in words is "two hundred forty-eight million, nine hundred ninety-seven thousand, two hundred sixty-one".