61432543 has 16 divisors (see below), whose sum is σ = 67535424. Its totient is φ = 55641600.

The previous prime is 61432507. The next prime is 61432559. The reversal of 61432543 is 34523416.

It is a cyclic number.

It is not a de Polignac number, because 61432543 - 2⁹ = 61432031 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61432573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63046 + ... + 64012.

It is an arithmetic number, because the mean of its divisors is an integer number (4220964).

Almost surely, 2^61432543 is an apocalyptic number.

61432543 is a deficient number, since it is larger than the sum of its proper divisors (6102881).

61432543 is a wasteful number, since it uses less digits than its factorization.

61432543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

The product of its digits is 8640, while the sum is 28.

The square root of 61432543 is about 7837.8914894249. The cubic root of 61432543 is about 394.5779672336.

Adding to 61432543 its reverse (34523416), we get a palindrome (95955959).

The spelling of 61432543 in words is "sixty-one million, four hundred thirty-two thousand, five hundred forty-three".