61156444 has 12 divisors (see below), whose sum is σ = 107367904. Its totient is φ = 30479904.

The previous prime is 61156441. The next prime is 61156457. The reversal of 61156444 is 44465116.

61156444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61156444² = 7480221285450272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61156441) 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 3 ways as a sum of consecutive naturals, for example, 23172 + ... + 25675.

Almost surely, 2^61156444 is an apocalyptic number.

It is an amenable number.

61156444 is a deficient number, since it is larger than the sum of its proper divisors (46211460).

61156444 is a wasteful number, since it uses less digits than its factorization.

61156444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49164 (or 49162 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 61156444 is about 7820.2585635003. The cubic root of 61156444 is about 393.9859563651.

The spelling of 61156444 in words is "sixty-one million, one hundred fifty-six thousand, four hundred forty-four".