61606253 has 4 divisors (see below), whose sum is σ = 61654908. Its totient is φ = 61557600.

The previous prime is 61606247. The next prime is 61606273. The reversal of 61606253 is 35260616.

61606253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1435204 + 60171049 = 1198^2 + 7757^2 .

It is a cyclic number.

It is not a de Polignac number, because 61606253 - 2¹² = 61602157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22376 + ... + 24977.

It is an arithmetic number, because the mean of its divisors is an integer number (15413727).

Almost surely, 2^61606253 is an apocalyptic number.

It is an amenable number.

61606253 is a deficient number, since it is larger than the sum of its proper divisors (48655).

61606253 is a wasteful number, since it uses less digits than its factorization.

61606253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48654.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 61606253 is about 7848.9650910168. The cubic root of 61606253 is about 394.9495272795.

Adding to 61606253 its reverse (35260616), we get a palindrome (96866869).

The spelling of 61606253 in words is "sixty-one million, six hundred six thousand, two hundred fifty-three".