610055581 has 2 divisors, whose sum is σ = 610055582. Its totient is φ = 610055580.

The previous prime is 610055543. The next prime is 610055587. The reversal of 610055581 is 185550016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602948025 + 7107556 = 24555^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 610055581 - 2¹⁷ = 609924509 is a prime.

It is a super-2 number, since 2×610055581² = 744335623818495122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610055587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305027790 + 305027791.

It is an arithmetic number, because the mean of its divisors is an integer number (305027791).

Almost surely, 2^610055581 is an apocalyptic number.

It is an amenable number.

610055581 is a deficient number, since it is larger than the sum of its proper divisors (1).

610055581 is an equidigital number, since it uses as much as digits as its factorization.

610055581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 610055581 is about 24699.3032492822. The cubic root of 610055581 is about 848.1183664465.

The spelling of 610055581 in words is "six hundred ten million, fifty-five thousand, five hundred eighty-one".