61005456 has 30 divisors (see below), whose sum is σ = 170730950. Its totient is φ = 20335104.

The previous prime is 61005419. The next prime is 61005457. The reversal of 61005456 is 65450016.

It is a happy number.

61005456 is a `hidden beast` number, since 610 + 0 + 5 + 45 + 6 = 666.

61005456 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 only one way, i.e., 40755456 + 20250000 = 6384^2 + 4500^2 .

It is not an unprimeable number, because it can be changed into a prime (61005457) 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 5 ways as a sum of consecutive naturals, for example, 211681 + ... + 211968.

Almost surely, 2^61005456 is an apocalyptic number.

It is an amenable number.

61005456 is an abundant number, since it is smaller than the sum of its proper divisors (109725494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61005456 is a wasteful number, since it uses less digits than its factorization.

61005456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423663 (or 423654 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 61005456 is about 7810.5989527052. The cubic root of 61005456 is about 393.6614543148.

The spelling of 61005456 in words is "sixty-one million, five thousand, four hundred fifty-six".