245783161 has 8 divisors (see below), whose sum is σ = 280259784. Its totient is φ = 213530880.

The previous prime is 245783137. The next prime is 245783261. The reversal of 245783161 is 161387542.

It can be written as a sum of positive squares in 4 ways, for example, as 103124025 + 142659136 = 10155^2 + 11944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245783161 - 2¹⁷ = 245652089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245783161.

It is not an unprimeable number, because it can be changed into a prime (245783261) 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, 555850 + ... + 556291.

It is an arithmetic number, because the mean of its divisors is an integer number (35032473).

Almost surely, 2^245783161 is an apocalyptic number.

It is an amenable number.

245783161 is a deficient number, since it is larger than the sum of its proper divisors (34476623).

245783161 is a wasteful number, since it uses less digits than its factorization.

245783161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112171.

The product of its digits is 40320, while the sum is 37.

The square root of 245783161 is about 15677.4730425538. The cubic root of 245783161 is about 626.3984991064.

The spelling of 245783161 in words is "two hundred forty-five million, seven hundred eighty-three thousand, one hundred sixty-one".