61745243 has 12 divisors (see below), whose sum is σ = 71975952. Its totient is φ = 52814160.

The previous prime is 61745227. The next prime is 61745251. The reversal of 61745243 is 34254716.

It is not a de Polignac number, because 61745243 - 2⁴ = 61745227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61745213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29921 + ... + 31917.

It is an arithmetic number, because the mean of its divisors is an integer number (5997996).

Almost surely, 2^61745243 is an apocalyptic number.

61745243 is a deficient number, since it is larger than the sum of its proper divisors (10230709).

61745243 is a wasteful number, since it uses less digits than its factorization.

61745243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2635 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 61745243 is about 7857.8141362595. The cubic root of 61745243 is about 395.2463196861.

Adding to 61745243 its reverse (34254716), we get a palindrome (95999959).

The spelling of 61745243 in words is "sixty-one million, seven hundred forty-five thousand, two hundred forty-three".