245801140 has 24 divisors (see below), whose sum is σ = 555889320. Its totient is φ = 90757248.

The previous prime is 245801137. The next prime is 245801173. The reversal of 245801140 is 41108542.

It can be written as a sum of positive squares in 4 ways, for example, as 46539684 + 199261456 = 6822^2 + 14116^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 472435 + ... + 472954.

It is an arithmetic number, because the mean of its divisors is an integer number (23162055).

Almost surely, 2^245801140 is an apocalyptic number.

245801140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245801140 is an abundant number, since it is smaller than the sum of its proper divisors (310088180).

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

245801140 is a wasteful number, since it uses less digits than its factorization.

245801140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945411 (or 945409 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 245801140 is about 15678.0464344254. The cubic root of 245801140 is about 626.4137723849.

Adding to 245801140 its reverse (41108542), we get a palindrome (286909682).

The spelling of 245801140 in words is "two hundred forty-five million, eight hundred one thousand, one hundred forty".