245255140 has 24 divisors (see below), whose sum is σ = 554654520. Its totient is φ = 90555648.

The previous prime is 245255119. The next prime is 245255147. The reversal of 245255140 is 41552542.

245255140 is digitally balanced in base 3, 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 8156736 + 237098404 = 2856^2 + 15398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245255099 and 245255108.

It is not an unprimeable number, because it can be changed into a prime (245255147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471385 + ... + 471904.

It is an arithmetic number, because the mean of its divisors is an integer number (23110605).

Almost surely, 2^245255140 is an apocalyptic number.

245255140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245255140 is an abundant number, since it is smaller than the sum of its proper divisors (309399380).

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

245255140 is a wasteful number, since it uses less digits than its factorization.

245255140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943311 (or 943309 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 245255140 is about 15660.6238700762. The cubic root of 245255140 is about 625.9496092569.

The spelling of 245255140 in words is "two hundred forty-five million, two hundred fifty-five thousand, one hundred forty".