61105143 has 8 divisors (see below), whose sum is σ = 88880256. Its totient is φ = 37033400.

The previous prime is 61105127. The next prime is 61105147. The reversal of 61105143 is 34150116.

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

It is a cyclic number.

It is not a de Polignac number, because 61105143 - 2⁴ = 61105127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61105147) 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, 925803 + ... + 925868.

It is an arithmetic number, because the mean of its divisors is an integer number (11110032).

Almost surely, 2^61105143 is an apocalyptic number.

61105143 is a deficient number, since it is larger than the sum of its proper divisors (27775113).

61105143 is a wasteful number, since it uses less digits than its factorization.

61105143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851685.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 61105143 is about 7816.9778687163. The cubic root of 61105143 is about 393.8757606854.

Adding to 61105143 its reverse (34150116), we get a palindrome (95255259).

The spelling of 61105143 in words is "sixty-one million, one hundred five thousand, one hundred forty-three".