245491560 has 160 divisors (see below), whose sum is σ = 873857160. Its totient is φ = 61599744.

The previous prime is 245491549. The next prime is 245491579. The reversal of 245491560 is 65194542.

245491560 is a `hidden beast` number, since 2 + 4 + 5 + 4 + 91 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 234641124 + 10850436 = 15318^2 + 3294^2 .

It is a super-2 number, since 2×245491560² = 120532212062467200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52852 + ... + 57308.

Almost surely, 2^245491560 is an apocalyptic number.

245491560 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 245491560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436928580).

245491560 is an abundant number, since it is smaller than the sum of its proper divisors (628365600).

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

245491560 is a wasteful number, since it uses less digits than its factorization.

245491560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4484 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 245491560 is about 15668.1702824548. The cubic root of 245491560 is about 626.1506780705.

It can be divided in two parts, 245491 and 560, that added together give a triangular number (246051 = T₇₀₁).

The spelling of 245491560 in words is "two hundred forty-five million, four hundred ninety-one thousand, five hundred sixty".