61056147 has 4 divisors (see below), whose sum is σ = 81408200. Its totient is φ = 40704096.

The previous prime is 61056137. The next prime is 61056157. The reversal of 61056147 is 74165016.

61056147 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 is an interprime number because it is at equal distance from previous prime (61056137) and next prime (61056157).

It is a de Polignac number, because none of the positive numbers 2^k-61056147 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61056137) 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, 10176022 + ... + 10176027.

It is an arithmetic number, because the mean of its divisors is an integer number (20352050).

Almost surely, 2^61056147 is an apocalyptic number.

61056147 is a deficient number, since it is larger than the sum of its proper divisors (20352053).

61056147 is a wasteful number, since it uses less digits than its factorization.

61056147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20352052.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 61056147 is about 7813.8432925162. The cubic root of 61056147 is about 393.7704585994.

The spelling of 61056147 in words is "sixty-one million, fifty-six thousand, one hundred forty-seven".