245777983 has 6 divisors (see below), whose sum is σ = 270152792. Its totient is φ = 223434420.

The previous prime is 245777969. The next prime is 245777999. The reversal of 245777983 is 389777542.

It is a de Polignac number, because none of the positive numbers 2^k-245777983 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 245777983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245777963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1015491 + ... + 1015732.

Almost surely, 2^245777983 is an apocalyptic number.

245777983 is a deficient number, since it is larger than the sum of its proper divisors (24374809).

245777983 is a wasteful number, since it uses less digits than its factorization.

245777983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031245 (or 2031234 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 52.

The square root of 245777983 is about 15677.3079002742. The cubic root of 245777983 is about 626.3941002232.

The spelling of 245777983 in words is "two hundred forty-five million, seven hundred seventy-seven thousand, nine hundred eighty-three".