61122147 has 4 divisors (see below), whose sum is σ = 81496200. Its totient is φ = 40748096.

The previous prime is 61122121. The next prime is 61122163. The reversal of 61122147 is 74122116.

61122147 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 a cyclic number.

It is not a de Polignac number, because 61122147 - 2¹¹ = 61120099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61122547) 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, 10187022 + ... + 10187027.

It is an arithmetic number, because the mean of its divisors is an integer number (20374050).

Almost surely, 2^61122147 is an apocalyptic number.

61122147 is a deficient number, since it is larger than the sum of its proper divisors (20374053).

61122147 is a wasteful number, since it uses less digits than its factorization.

61122147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20374052.

The product of its digits is 672, while the sum is 24.

The square root of 61122147 is about 7818.0654256664. The cubic root of 61122147 is about 393.9122924837.

The spelling of 61122147 in words is "sixty-one million, one hundred twenty-two thousand, one hundred forty-seven".