61291112 has 32 divisors (see below), whose sum is σ = 121500000. Its totient is φ = 28905408.

The previous prime is 61291091. The next prime is 61291117. The reversal of 61291112 is 21119216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61291117) 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, 40139 + ... + 41637.

It is an arithmetic number, because the mean of its divisors is an integer number (3796875).

Almost surely, 2^61291112 is an apocalyptic number.

It is an amenable number.

61291112 is a deficient number, since it is larger than the sum of its proper divisors (60208888).

61291112 is a wasteful number, since it uses less digits than its factorization.

61291112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1789 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 61291112 is about 7828.8640299854. The cubic root of 61291112 is about 394.2749332926.

The spelling of 61291112 in words is "sixty-one million, two hundred ninety-one thousand, one hundred twelve".