61156049 has 2 divisors, whose sum is σ = 61156050. Its totient is φ = 61156048.

The previous prime is 61156031. The next prime is 61156091. The reversal of 61156049 is 94065116.

61156049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47018449 + 14137600 = 6857^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 61156049 - 2²⁴ = 44378833 is a prime.

It is not a weakly prime, because it can be changed into another prime (61150049) 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 as a sum of consecutive naturals, namely, 30578024 + 30578025.

It is an arithmetic number, because the mean of its divisors is an integer number (30578025).

Almost surely, 2^61156049 is an apocalyptic number.

It is an amenable number.

61156049 is a deficient number, since it is larger than the sum of its proper divisors (1).

61156049 is an equidigital number, since it uses as much as digits as its factorization.

61156049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 61156049 is about 7820.2333085401. The cubic root of 61156049 is about 393.9851081319.

The spelling of 61156049 in words is "sixty-one million, one hundred fifty-six thousand, forty-nine".