61055081 has 2 divisors, whose sum is σ = 61055082. Its totient is φ = 61055080.

The previous prime is 61055051. The next prime is 61055119. The reversal of 61055081 is 18055016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 6295081 = 7400^2 + 2509^2 .

It is a cyclic number.

It is not a de Polignac number, because 61055081 - 2⁶ = 61055017 is a prime.

It is a super-2 number, since 2×61055081² = 7455445831833122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61055081.

It is not a weakly prime, because it can be changed into another prime (61055011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527540 + 30527541.

It is an arithmetic number, because the mean of its divisors is an integer number (30527541).

Almost surely, 2^61055081 is an apocalyptic number.

It is an amenable number.

61055081 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055081 is an equidigital number, since it uses as much as digits as its factorization.

61055081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 61055081 is about 7813.7750799470. The cubic root of 61055081 is about 393.7681669287.

The spelling of 61055081 in words is "sixty-one million, fifty-five thousand, eighty-one".