61253565 has 8 divisors (see below), whose sum is σ = 98005728. Its totient is φ = 32668560.

The previous prime is 61253557. The next prime is 61253609. The reversal of 61253565 is 56535216.

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

It is not a de Polignac number, because 61253565 - 2³ = 61253557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041771 + ... + 2041800.

It is an arithmetic number, because the mean of its divisors is an integer number (12250716).

Almost surely, 2^61253565 is an apocalyptic number.

It is an amenable number.

61253565 is a deficient number, since it is larger than the sum of its proper divisors (36752163).

61253565 is a wasteful number, since it uses less digits than its factorization.

61253565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083579.

The product of its digits is 27000, while the sum is 33.

The square root of 61253565 is about 7826.4656774306. The cubic root of 61253565 is about 394.1944057663.

The spelling of 61253565 in words is "sixty-one million, two hundred fifty-three thousand, five hundred sixty-five".