61244160 has 144 divisors (see below), whose sum is σ = 200884320. Its totient is φ = 15892480.

The previous prime is 61244159. The next prime is 61244167. The reversal of 61244160 is 6144216.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61244160.

It is not an unprimeable number, because it can be changed into a prime (61244167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157246 + ... + 157634.

It is an arithmetic number, because the mean of its divisors is an integer number (1395030).

Almost surely, 2^61244160 is an apocalyptic number.

61244160 is a gapful number since it is divisible by the number (60) 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 61244160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100442160).

61244160 is an abundant number, since it is smaller than the sum of its proper divisors (139640160).

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

61244160 is a wasteful number, since it uses less digits than its factorization.

61244160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 61244160 is about 7825.8648084413. The cubic root of 61244160 is about 394.1742295902.

Adding to 61244160 its reverse (6144216), we get a palindrome (67388376).

The spelling of 61244160 in words is "sixty-one million, two hundred forty-four thousand, one hundred sixty".