61156146 has 16 divisors (see below), whose sum is σ = 122649984. Its totient is φ = 20329104.

The previous prime is 61156129. The next prime is 61156163. The reversal of 61156146 is 64165116.

61156146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61156129) and next prime (61156163).

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, 11685 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (7665624).

Almost surely, 2^61156146 is an apocalyptic number.

61156146 is an abundant number, since it is smaller than the sum of its proper divisors (61493838).

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

61156146 is a wasteful number, since it uses less digits than its factorization.

61156146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28145.

The product of its digits is 4320, while the sum is 30.

The square root of 61156146 is about 7820.2395103986. The cubic root of 61156146 is about 393.9853164325.

The spelling of 61156146 in words is "sixty-one million, one hundred fifty-six thousand, one hundred forty-six".