61156044 has 36 divisors (see below), whose sum is σ = 156099216. Its totient is φ = 20186208.

The previous prime is 61156031. The next prime is 61156049. The reversal of 61156044 is 44065116.

61156044 is a `hidden beast` number, since 61 + 1 + 560 + 44 = 666.

61156044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 61155999 and 61156017.

It is not an unprimeable number, because it can be changed into a prime (61156049) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4539 + ... + 11954.

Almost surely, 2^61156044 is an apocalyptic number.

It is an amenable number.

61156044 is an abundant number, since it is smaller than the sum of its proper divisors (94943172).

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

61156044 is a wasteful number, since it uses less digits than its factorization.

61156044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16606 (or 16601 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61156044 is about 7820.2329888565. The cubic root of 61156044 is about 393.9850973947.

The spelling of 61156044 in words is "sixty-one million, one hundred fifty-six thousand, forty-four".