61156156 has 12 divisors (see below), whose sum is σ = 107742600. Its totient is φ = 30372560.

The previous prime is 61156129. The next prime is 61156163. The reversal of 61156156 is 65165116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50710 + ... + 51901.

It is an arithmetic number, because the mean of its divisors is an integer number (8978550).

Almost surely, 2^61156156 is an apocalyptic number.

It is an amenable number.

61156156 is a deficient number, since it is larger than the sum of its proper divisors (46586444).

61156156 is a wasteful number, since it uses less digits than its factorization.

61156156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102764 (or 102762 counting only the distinct ones).

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

The square root of 61156156 is about 7820.2401497652. The cubic root of 61156156 is about 393.9853379068.

The spelling of 61156156 in words is "sixty-one million, one hundred fifty-six thousand, one hundred fifty-six".