60855581 has 2 divisors, whose sum is σ = 60855582. Its totient is φ = 60855580.

The previous prime is 60855577. The next prime is 60855617. The reversal of 60855581 is 18555806.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58767556 + 2088025 = 7666^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 60855581 - 2² = 60855577 is a prime.

It is a super-2 number, since 2×60855581² = 7406803477695122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3609992 and since 60855581 and 3609992 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60855541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30427790 + 30427791.

It is an arithmetic number, because the mean of its divisors is an integer number (30427791).

Almost surely, 2^60855581 is an apocalyptic number.

It is an amenable number.

60855581 is a deficient number, since it is larger than the sum of its proper divisors (1).

60855581 is an equidigital number, since it uses as much as digits as its factorization.

60855581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 60855581 is about 7800.9987181130. The cubic root of 60855581 is about 393.3388143607.

The spelling of 60855581 in words is "sixty million, eight hundred fifty-five thousand, five hundred eighty-one".