61115156 has 6 divisors (see below), whose sum is σ = 106951530. Its totient is φ = 30557576.

The previous prime is 61115137. The next prime is 61115161. The reversal of 61115156 is 65151116.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 586756 = 7780^2 + 766^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639391 + ... + 7639398.

It is an arithmetic number, because the mean of its divisors is an integer number (17825255).

Almost surely, 2^61115156 is an apocalyptic number.

It is an amenable number.

61115156 is a deficient number, since it is larger than the sum of its proper divisors (45836374).

61115156 is a wasteful number, since it uses less digits than its factorization.

61115156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15278793 (or 15278791 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 61115156 is about 7817.6183073875. The cubic root of 61115156 is about 393.8972736732.

The spelling of 61115156 in words is "sixty-one million, one hundred fifteen thousand, one hundred fifty-six".