248977745 has 8 divisors (see below), whose sum is σ = 299937384. Its totient is φ = 198406144.

The previous prime is 248977741. The next prime is 248977763. The reversal of 248977745 is 547779842.

It can be written as a sum of positive squares in 4 ways, for example, as 69739201 + 179238544 = 8351^2 + 13388^2 .

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 248977745 - 2² = 248977741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248977741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95594 + ... + 98163.

It is an arithmetic number, because the mean of its divisors is an integer number (37492173).

Almost surely, 2^248977745 is an apocalyptic number.

It is an amenable number.

248977745 is a deficient number, since it is larger than the sum of its proper divisors (50959639).

248977745 is a wasteful number, since it uses less digits than its factorization.

248977745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194019.

The product of its digits is 3951360, while the sum is 53.

The square root of 248977745 is about 15779.0286456423. The cubic root of 248977745 is about 629.1007115537.

The spelling of 248977745 in words is "two hundred forty-eight million, nine hundred seventy-seven thousand, seven hundred forty-five".