245777445 has 48 divisors (see below), whose sum is σ = 450552960. Its totient is φ = 123596928.

The previous prime is 245777423. The next prime is 245777447. The reversal of 245777445 is 544777542.

245777445 is a `hidden beast` number, since 2 + 4 + 577 + 74 + 4 + 5 = 666.

It is not a de Polignac number, because 245777445 - 2¹³ = 245769253 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 245777445.

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 47 ways as a sum of consecutive naturals, for example, 224319 + ... + 225411.

It is an arithmetic number, because the mean of its divisors is an integer number (9386520).

Almost surely, 2^245777445 is an apocalyptic number.

It is an amenable number.

245777445 is a deficient number, since it is larger than the sum of its proper divisors (204775515).

245777445 is a wasteful number, since it uses less digits than its factorization.

245777445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1383 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 45.

The square root of 245777445 is about 15677.2907417066. The cubic root of 245777445 is about 626.3936431708.

The spelling of 245777445 in words is "two hundred forty-five million, seven hundred seventy-seven thousand, four hundred forty-five".