61545236 has 24 divisors (see below), whose sum is σ = 114465960. Its totient is φ = 28854272.

The previous prime is 61545227. The next prime is 61545271. The reversal of 61545236 is 63254516.

61545236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47059600 + 14485636 = 6860^2 + 3806^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18380 + ... + 21468.

It is an arithmetic number, because the mean of its divisors is an integer number (4769415).

Almost surely, 2^61545236 is an apocalyptic number.

It is an amenable number.

61545236 is a deficient number, since it is larger than the sum of its proper divisors (52920724).

61545236 is a wasteful number, since it uses less digits than its factorization.

61545236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 3401 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 61545236 is about 7845.0771825394. The cubic root of 61545236 is about 394.8190935732.

The spelling of 61545236 in words is "sixty-one million, five hundred forty-five thousand, two hundred thirty-six".