245553440 has 192 divisors, whose sum is σ = 695640960. Its totient is φ = 80855040.

The previous prime is 245553437. The next prime is 245553481. The reversal of 245553440 is 44355542.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 245553397 and 245553406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867539 + ... + 867821.

It is an arithmetic number, because the mean of its divisors is an integer number (3623130).

Almost surely, 2^245553440 is an apocalyptic number.

245553440 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 245553440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347820480).

245553440 is an abundant number, since it is smaller than the sum of its proper divisors (450087520).

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

245553440 is a wasteful number, since it uses less digits than its factorization.

245553440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 245553440 is about 15670.1448621256. The cubic root of 245553440 is about 626.2032840187.

The spelling of 245553440 in words is "two hundred forty-five million, five hundred fifty-three thousand, four hundred forty".