245155440 has 160 divisors (see below), whose sum is σ = 795949056. Its totient is φ = 62346240.

The previous prime is 245155439. The next prime is 245155501. The reversal of 245155440 is 44551542.

245155440 is digitally balanced in base 2, because in such base 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 = 245155398 and 245155407.

It is a congruent number.

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, 617322 + ... + 617718.

Almost surely, 2^245155440 is an apocalyptic number.

245155440 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 245155440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397974528).

245155440 is an abundant number, since it is smaller than the sum of its proper divisors (550793616).

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

245155440 is a wasteful number, since it uses less digits than its factorization.

245155440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 521 counting only the distinct ones).

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

The square root of 245155440 is about 15657.4404038463. The cubic root of 245155440 is about 625.8647783682.

The spelling of 245155440 in words is "two hundred forty-five million, one hundred fifty-five thousand, four hundred forty".