61155156 has 24 divisors (see below), whose sum is σ = 143740800. Its totient is φ = 20235712.

The previous prime is 61155139. The next prime is 61155161. The reversal of 61155156 is 65155116.

61155156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16956 + ... + 20243.

It is an arithmetic number, because the mean of its divisors is an integer number (5989200).

Almost surely, 2^61155156 is an apocalyptic number.

It is an amenable number.

61155156 is an abundant number, since it is smaller than the sum of its proper divisors (82585644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61155156 is a wasteful number, since it uses less digits than its factorization.

61155156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37343 (or 37341 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 61155156 is about 7820.1762128484. The cubic root of 61155156 is about 393.9831904670.

The spelling of 61155156 in words is "sixty-one million, one hundred fifty-five thousand, one hundred fifty-six".