245581100 has 18 divisors (see below), whose sum is σ = 532911204. Its totient is φ = 98232400.

The previous prime is 245581093. The next prime is 245581109. The reversal of 245581100 is 1185542.

It is a self number, because there is not a number n which added to its sum of digits gives 245581100.

It is not an unprimeable number, because it can be changed into a prime (245581109) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1227806 + ... + 1228005.

It is an arithmetic number, because the mean of its divisors is an integer number (29606178).

Almost surely, 2^245581100 is an apocalyptic number.

245581100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245581100 is an abundant number, since it is smaller than the sum of its proper divisors (287330104).

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

245581100 is a wasteful number, since it uses less digits than its factorization.

245581100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455825 (or 2455818 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 245581100 is about 15671.0274072889. The cubic root of 245581100 is about 626.2267957134.

The spelling of 245581100 in words is "two hundred forty-five million, five hundred eighty-one thousand, one hundred".