61115743 has 8 divisors (see below), whose sum is σ = 66651200. Its totient is φ = 55699488.

The previous prime is 61115737. The next prime is 61115753. The reversal of 61115743 is 34751116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61115743 - 2²¹ = 59018591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61115713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28728 + ... + 30781.

It is an arithmetic number, because the mean of its divisors is an integer number (8331400).

Almost surely, 2^61115743 is an apocalyptic number.

61115743 is a deficient number, since it is larger than the sum of its proper divisors (5535457).

61115743 is a wasteful number, since it uses less digits than its factorization.

61115743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59601.

The product of its digits is 2520, while the sum is 28.

The square root of 61115743 is about 7817.6558507010. The cubic root of 61115743 is about 393.8985347731.

Adding to 61115743 its reverse (34751116), we get a palindrome (95866859).

The spelling of 61115743 in words is "sixty-one million, one hundred fifteen thousand, seven hundred forty-three".