245777047 has 4 divisors (see below), whose sum is σ = 245862000. Its totient is φ = 245692096.

The previous prime is 245777009. The next prime is 245777069. The reversal of 245777047 is 740777542.

245777047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740777542 = 2 ⋅370388771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245777047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245776994 and 245777012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245777447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37978 + ... + 43975.

It is an arithmetic number, because the mean of its divisors is an integer number (61465500).

Almost surely, 2^245777047 is an apocalyptic number.

245777047 is a deficient number, since it is larger than the sum of its proper divisors (84953).

245777047 is an equidigital number, since it uses as much as digits as its factorization.

245777047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84952.

The product of its (nonzero) digits is 384160, while the sum is 43.

The square root of 245777047 is about 15677.2780481817. The cubic root of 245777047 is about 626.3933050535.

The spelling of 245777047 in words is "two hundred forty-five million, seven hundred seventy-seven thousand, forty-seven".