61018357 has 2 divisors, whose sum is σ = 61018358. Its totient is φ = 61018356.

The previous prime is 61018343. The next prime is 61018369. The reversal of 61018357 is 75381016.

61018357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49688401 + 11329956 = 7049^2 + 3366^2 .

It is a cyclic number.

It is not a de Polignac number, because 61018357 - 2⁷ = 61018229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61018337) 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, 30509178 + 30509179.

It is an arithmetic number, because the mean of its divisors is an integer number (30509179).

Almost surely, 2^61018357 is an apocalyptic number.

It is an amenable number.

61018357 is a deficient number, since it is larger than the sum of its proper divisors (1).

61018357 is an equidigital number, since it uses as much as digits as its factorization.

61018357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 61018357 is about 7811.4247740089. The cubic root of 61018357 is about 393.6892019339.

The spelling of 61018357 in words is "sixty-one million, eighteen thousand, three hundred fifty-seven".