61255243 has 6 divisors (see below), whose sum is σ = 71256156. Its totient is φ = 52504452.

The previous prime is 61255231. The next prime is 61255247. The reversal of 61255243 is 34255216.

It is not a de Polignac number, because 61255243 - 2⁹ = 61254731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61255247) 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, 625005 + ... + 625102.

It is an arithmetic number, because the mean of its divisors is an integer number (11876026).

Almost surely, 2^61255243 is an apocalyptic number.

61255243 is a deficient number, since it is larger than the sum of its proper divisors (10000913).

61255243 is a wasteful number, since it uses less digits than its factorization.

61255243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250121 (or 1250114 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 61255243 is about 7826.5728770644. The cubic root of 61255243 is about 394.1980052965.

It can be divided in two parts, 612 and 55243, that added together give a palindrome (55855).

The spelling of 61255243 in words is "sixty-one million, two hundred fifty-five thousand, two hundred forty-three".