245499540 has 288 divisors, whose sum is σ = 850010112. Its totient is φ = 52416000.

The previous prime is 245499521. The next prime is 245499581. The reversal of 245499540 is 45994542.

It is a junction number, because it is equal to n+sod(n) for n = 245499492 and 245499501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3457705 + ... + 3457775.

It is an arithmetic number, because the mean of its divisors is an integer number (2951424).

Almost surely, 2^245499540 is an apocalyptic number.

245499540 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 245499540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425005056).

245499540 is an abundant number, since it is smaller than the sum of its proper divisors (604510572).

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

245499540 is a wasteful number, since it uses less digits than its factorization.

245499540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 245499540 is about 15668.4249367957. The cubic root of 245499540 is about 626.1574625920.

The spelling of 245499540 in words is "two hundred forty-five million, four hundred ninety-nine thousand, five hundred forty".