555501010061 has 2 divisors, whose sum is σ = 555501010062. Its totient is φ = 555501010060.

The previous prime is 555501010037. The next prime is 555501010123. The reversal of 555501010061 is 160010105555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459506381161 + 95994628900 = 677869^2 + 309830^2 .

It is a cyclic number.

It is not a de Polignac number, because 555501010061 - 2¹⁸ = 555500747917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555501016061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277750505030 + 277750505031.

It is an arithmetic number, because the mean of its divisors is an integer number (277750505031).

Almost surely, 2^555501010061 is an apocalyptic number.

It is an amenable number.

555501010061 is a deficient number, since it is larger than the sum of its proper divisors (1).

555501010061 is an equidigital number, since it uses as much as digits as its factorization.

555501010061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 555501010061 in words is "five hundred fifty-five billion, five hundred one million, ten thousand, sixty-one".