61565242 has 8 divisors (see below), whose sum is σ = 92406132. Its totient is φ = 30763200.

The previous prime is 61565237. The next prime is 61565243. The reversal of 61565242 is 24256516.

It can be written as a sum of positive squares in 2 ways, for example, as 47734281 + 13830961 = 6909^2 + 3719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61565243) 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, 5359 + ... + 12322.

Almost surely, 2^61565242 is an apocalyptic number.

61565242 is a deficient number, since it is larger than the sum of its proper divisors (30840890).

61565242 is a wasteful number, since it uses less digits than its factorization.

61565242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19424.

The product of its digits is 14400, while the sum is 31.

The square root of 61565242 is about 7846.3521460613. The cubic root of 61565242 is about 394.8618691292.

The spelling of 61565242 in words is "sixty-one million, five hundred sixty-five thousand, two hundred forty-two".