61111141 has 16 divisors (see below), whose sum is σ = 79640064. Its totient is φ = 45506304.

The previous prime is 61111133. The next prime is 61111159. The reversal of 61111141 is 14111116.

It is a cyclic number.

It is not a de Polignac number, because 61111141 - 2³ = 61111133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111111) 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, 18205 + ... + 21298.

It is an arithmetic number, because the mean of its divisors is an integer number (4977504).

Almost surely, 2^61111141 is an apocalyptic number.

It is an amenable number.

61111141 is a deficient number, since it is larger than the sum of its proper divisors (18528923).

61111141 is a wasteful number, since it uses less digits than its factorization.

61111141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39540.

The product of its digits is 24, while the sum is 16.

The square root of 61111141 is about 7817.3615114052. The cubic root of 61111141 is about 393.8886477049. Note that the first 3 decimals are identical.

Adding to 61111141 its reverse (14111116), we get a palindrome (75222257).

The spelling of 61111141 in words is "sixty-one million, one hundred eleven thousand, one hundred forty-one".