61565485 has 4 divisors (see below), whose sum is σ = 73878588. Its totient is φ = 49252384.

The previous prime is 61565467. The next prime is 61565501. The reversal of 61565485 is 58456516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49196196 + 12369289 = 7014^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 61565485 - 2¹⁵ = 61532717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6156544 + ... + 6156553.

It is an arithmetic number, because the mean of its divisors is an integer number (18469647).

Almost surely, 2^61565485 is an apocalyptic number.

It is an amenable number.

61565485 is a deficient number, since it is larger than the sum of its proper divisors (12313103).

61565485 is a wasteful number, since it uses less digits than its factorization.

61565485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12313102.

The product of its digits is 144000, while the sum is 40.

The square root of 61565485 is about 7846.3676309487. The cubic root of 61565485 is about 394.8623886394.

The spelling of 61565485 in words is "sixty-one million, five hundred sixty-five thousand, four hundred eighty-five".