61013273 has 6 divisors (see below), whose sum is σ = 63781914. Its totient is φ = 58360016.

The previous prime is 61013269. The next prime is 61013297. The reversal of 61013273 is 37231016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57957769 + 3055504 = 7613^2 + 1748^2 .

It is not a de Polignac number, because 61013273 - 2² = 61013269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61013203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57140 + ... + 58197.

It is an arithmetic number, because the mean of its divisors is an integer number (10630319).

Almost surely, 2^61013273 is an apocalyptic number.

It is an amenable number.

61013273 is a deficient number, since it is larger than the sum of its proper divisors (2768641).

61013273 is a wasteful number, since it uses less digits than its factorization.

61013273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115383 (or 115360 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 61013273 is about 7811.0993464429. The cubic root of 61013273 is about 393.6782676752.

Adding to 61013273 its reverse (37231016), we get a palindrome (98244289).

The spelling of 61013273 in words is "sixty-one million, thirteen thousand, two hundred seventy-three".