61163543 has 8 divisors (see below), whose sum is σ = 70169088. Its totient is φ = 52224984.

The previous prime is 61163533. The next prime is 61163549. The reversal of 61163543 is 34536116.

It is a happy number.

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

It is not a de Polignac number, because 61163543 - 2¹² = 61159447 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 (61163549) 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, 14771 + ... + 18452.

It is an arithmetic number, because the mean of its divisors is an integer number (8771136).

Almost surely, 2^61163543 is an apocalyptic number.

61163543 is a deficient number, since it is larger than the sum of its proper divisors (9005545).

61163543 is a wasteful number, since it uses less digits than its factorization.

61163543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33493.

The product of its digits is 6480, while the sum is 29.

The square root of 61163543 is about 7820.7124355777. The cubic root of 61163543 is about 394.0012003193.

Adding to 61163543 its reverse (34536116), we get a palindrome (95699659).

The spelling of 61163543 in words is "sixty-one million, one hundred sixty-three thousand, five hundred forty-three".