245545140 has 48 divisors (see below), whose sum is σ = 694350720. Its totient is φ = 64828800.

The previous prime is 245545109. The next prime is 245545147. The reversal of 245545140 is 41545542.

245545140 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 245545098 and 245545107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245545147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14200 + ... + 26319.

It is an arithmetic number, because the mean of its divisors is an integer number (14465640).

Almost surely, 2^245545140 is an apocalyptic number.

245545140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245545140 is an abundant number, since it is smaller than the sum of its proper divisors (448805580).

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

245545140 is a wasteful number, since it uses less digits than its factorization.

245545140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40632 (or 40630 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 245545140 is about 15669.8800250672. The cubic root of 245545140 is about 626.1962284659.

The spelling of 245545140 in words is "two hundred forty-five million, five hundred forty-five thousand, one hundred forty".