61294543 has 4 divisors (see below), whose sum is σ = 61362160. Its totient is φ = 61226928.

The previous prime is 61294531. The next prime is 61294547. The reversal of 61294543 is 34549216.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61294543 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61294499 and 61294508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61294547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32430 + ... + 34267.

It is an arithmetic number, because the mean of its divisors is an integer number (15340540).

Almost surely, 2^61294543 is an apocalyptic number.

61294543 is a deficient number, since it is larger than the sum of its proper divisors (67617).

61294543 is an equidigital number, since it uses as much as digits as its factorization.

61294543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67616.

The product of its digits is 25920, while the sum is 34.

The square root of 61294543 is about 7829.0831519406. The cubic root of 61294543 is about 394.2822901617.

The spelling of 61294543 in words is "sixty-one million, two hundred ninety-four thousand, five hundred forty-three".