245175640 has 32 divisors (see below), whose sum is σ = 552096000. Its totient is φ = 97990144.

The previous prime is 245175589. The next prime is 245175647. The reversal of 245175640 is 46571542.

245175640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×245175640³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 245175596 and 245175605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245175647) 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, 83721 + ... + 86599.

It is an arithmetic number, because the mean of its divisors is an integer number (17253000).

Almost surely, 2^245175640 is an apocalyptic number.

245175640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245175640 is an abundant number, since it is smaller than the sum of its proper divisors (306920360).

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

245175640 is a wasteful number, since it uses less digits than its factorization.

245175640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019 (or 5015 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 245175640 is about 15658.0854512932. The cubic root of 245175640 is about 625.8819676275.

The spelling of 245175640 in words is "two hundred forty-five million, one hundred seventy-five thousand, six hundred forty".