61241564 has 12 divisors (see below), whose sum is σ = 109453344. Its totient is φ = 29969184.

The previous prime is 61241561. The next prime is 61241581. The reversal of 61241564 is 46514216.

It is a super-2 number, since 2×61241564² = 7501058322332192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61241561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162689 + ... + 163064.

It is an arithmetic number, because the mean of its divisors is an integer number (9121112).

Almost surely, 2^61241564 is an apocalyptic number.

It is an amenable number.

61241564 is a deficient number, since it is larger than the sum of its proper divisors (48211780).

61241564 is a wasteful number, since it uses less digits than its factorization.

61241564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325804 (or 325802 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 61241564 is about 7825.6989464201. The cubic root of 61241564 is about 394.1686601298.

The spelling of 61241564 in words is "sixty-one million, two hundred forty-one thousand, five hundred sixty-four".