245775140 has 24 divisors (see below), whose sum is σ = 555830520. Its totient is φ = 90747648.

The previous prime is 245775133. The next prime is 245775193. The reversal of 245775140 is 41577542.

245775140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 602176 + 245172964 = 776^2 + 15658^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 245775140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472385 + ... + 472904.

It is an arithmetic number, because the mean of its divisors is an integer number (23159605).

Almost surely, 2^245775140 is an apocalyptic number.

245775140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245775140 is an abundant number, since it is smaller than the sum of its proper divisors (310055380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245775140 is a wasteful number, since it uses less digits than its factorization.

245775140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945311 (or 945309 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 245775140 is about 15677.2172275567. The cubic root of 245775140 is about 626.3916849740.

The spelling of 245775140 in words is "two hundred forty-five million, seven hundred seventy-five thousand, one hundred forty".