61273393 has 4 divisors (see below), whose sum is σ = 62767908. Its totient is φ = 59778880.

The previous prime is 61273351. The next prime is 61273411. The reversal of 61273393 is 39337216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29778849 + 31494544 = 5457^2 + 5612^2 .

It is a cyclic number.

It is not a de Polignac number, because 61273393 - 2⁹ = 61272881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61273343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747196 + ... + 747277.

It is an arithmetic number, because the mean of its divisors is an integer number (15691977).

Almost surely, 2^61273393 is an apocalyptic number.

It is an amenable number.

61273393 is a deficient number, since it is larger than the sum of its proper divisors (1494515).

61273393 is a wasteful number, since it uses less digits than its factorization.

61273393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494514.

The product of its digits is 20412, while the sum is 34.

The square root of 61273393 is about 7827.7323025254. The cubic root of 61273393 is about 394.2369352281.

The spelling of 61273393 in words is "sixty-one million, two hundred seventy-three thousand, three hundred ninety-three".