245553220 has 96 divisors (see below), whose sum is σ = 583583616. Its totient is φ = 86016000.

The previous prime is 245553193. The next prime is 245553227. The reversal of 245553220 is 22355542.

It is not an unprimeable number, because it can be changed into a prime (245553227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955332 + ... + 955588.

It is an arithmetic number, because the mean of its divisors is an integer number (6078996).

Almost surely, 2^245553220 is an apocalyptic number.

245553220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245553220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291791808).

245553220 is an abundant number, since it is smaller than the sum of its proper divisors (338030396).

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

245553220 is a wasteful number, since it uses less digits than its factorization.

245553220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 245553220 is about 15670.1378424059. The cubic root of 245553220 is about 626.2030970061.

The spelling of 245553220 in words is "two hundred forty-five million, five hundred fifty-three thousand, two hundred twenty".