61305256 has 8 divisors (see below), whose sum is σ = 114947370. Its totient is φ = 30652624.

The previous prime is 61305239. The next prime is 61305271. The reversal of 61305256 is 65250316.

It can be written as a sum of positive squares in only one way, i.e., 35640900 + 25664356 = 5970^2 + 5066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3831571 + ... + 3831586.

Almost surely, 2^61305256 is an apocalyptic number.

It is an amenable number.

61305256 is a deficient number, since it is larger than the sum of its proper divisors (53642114).

61305256 is a wasteful number, since it uses less digits than its factorization.

61305256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663163 (or 7663159 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 61305256 is about 7829.7673017785. The cubic root of 61305256 is about 394.3052595806.

The spelling of 61305256 in words is "sixty-one million, three hundred five thousand, two hundred fifty-six".