61273146 has 32 divisors (see below), whose sum is σ = 134668800. Its totient is φ = 18431280.

The previous prime is 61273133. The next prime is 61273153. The reversal of 61273146 is 64137216.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5835 + ... + 12513.

It is an arithmetic number, because the mean of its divisors is an integer number (4208400).

Almost surely, 2^61273146 is an apocalyptic number.

61273146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 61273146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67334400).

61273146 is an abundant number, since it is smaller than the sum of its proper divisors (73395654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61273146 is a wasteful number, since it uses less digits than its factorization.

61273146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834.

The product of its digits is 6048, while the sum is 30.

The square root of 61273146 is about 7827.7165252710. The cubic root of 61273146 is about 394.2364054895.

The spelling of 61273146 in words is "sixty-one million, two hundred seventy-three thousand, one hundred forty-six".