555020505 has 168 divisors, whose sum is σ = 1166510808. Its totient is φ = 252315648.

The previous prime is 555020483. The next prime is 555020527. The reversal of 555020505 is 505020555.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (555020483) and next prime (555020527).

It can be written as a sum of positive squares in 12 ways, for example, as 172896201 + 382124304 = 13149^2 + 19548^2 .

It is not a de Polignac number, because 555020505 - 2⁶ = 555020441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 in 167 ways as a sum of consecutive naturals, for example, 10472059 + ... + 10472111.

Almost surely, 2^555020505 is an apocalyptic number.

It is an amenable number.

555020505 is an abundant number, since it is smaller than the sum of its proper divisors (611490303).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555020505 is a wasteful number, since it uses less digits than its factorization.

555020505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 555020505 is about 23558.8731691480. The cubic root of 555020505 is about 821.8066970470.

The spelling of 555020505 in words is "five hundred fifty-five million, twenty thousand, five hundred five".