61116556 has 6 divisors (see below), whose sum is σ = 106953980. Its totient is φ = 30558276.

The previous prime is 61116551. The next prime is 61116557. The reversal of 61116556 is 65561116.

It is a super-2 number, since 2×61116556² = 7470466834602272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61116551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639566 + ... + 7639573.

Almost surely, 2^61116556 is an apocalyptic number.

It is an amenable number.

61116556 is a deficient number, since it is larger than the sum of its proper divisors (45837424).

61116556 is a wasteful number, since it uses less digits than its factorization.

61116556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15279143 (or 15279141 counting only the distinct ones).

The product of its digits is 5400, while the sum is 31.

The square root of 61116556 is about 7817.7078482123. The cubic root of 61116556 is about 393.9002813940.

The spelling of 61116556 in words is "sixty-one million, one hundred sixteen thousand, five hundred fifty-six".