61273121 has 16 divisors (see below), whose sum is σ = 75936000. Its totient is φ = 48143808.

The previous prime is 61273099. The next prime is 61273123. The reversal of 61273121 is 12137216.

61273121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61273121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61273123) 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 15 ways as a sum of consecutive naturals, for example, 11300 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (4746000).

Almost surely, 2^61273121 is an apocalyptic number.

It is an amenable number.

61273121 is a deficient number, since it is larger than the sum of its proper divisors (14662879).

61273121 is a wasteful number, since it uses less digits than its factorization.

61273121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its digits is 504, while the sum is 23.

The square root of 61273121 is about 7827.7149283811. The cubic root of 61273121 is about 394.2363518721.

The spelling of 61273121 in words is "sixty-one million, two hundred seventy-three thousand, one hundred twenty-one".