245045540 has 48 divisors (see below), whose sum is σ = 525435120. Its totient is φ = 95969280.

The previous prime is 245045539. The next prime is 245045543. The reversal of 245045540 is 45540542.

It can be written as a sum of positive squares in 8 ways, for example, as 78996544 + 166048996 = 8888^2 + 12886^2 .

It is not an unprimeable number, because it can be changed into a prime (245045543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430376 + ... + 430944.

It is an arithmetic number, because the mean of its divisors is an integer number (10946565).

Almost surely, 2^245045540 is an apocalyptic number.

245045540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245045540 is an abundant number, since it is smaller than the sum of its proper divisors (280389580).

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

245045540 is a wasteful number, since it uses less digits than its factorization.

245045540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 245045540 is about 15653.9304968433. The cubic root of 245045540 is about 625.7712420390.

The spelling of 245045540 in words is "two hundred forty-five million, forty-five thousand, five hundred forty".