555000020501 has 2 divisors, whose sum is σ = 555000020502. Its totient is φ = 555000020500.

The previous prime is 555000020441. The next prime is 555000020507. The reversal of 555000020501 is 105020000555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442524300625 + 112475719876 = 665225^2 + 335374^2 .

It is a cyclic number.

It is not a de Polignac number, because 555000020501 - 2¹⁰ = 555000019477 is a prime.

It is a super-3 number, since 3×555000020501³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555000020507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277500010250 + 277500010251.

It is an arithmetic number, because the mean of its divisors is an integer number (277500010251).

Almost surely, 2^555000020501 is an apocalyptic number.

It is an amenable number.

555000020501 is a deficient number, since it is larger than the sum of its proper divisors (1).

555000020501 is an equidigital number, since it uses as much as digits as its factorization.

555000020501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1250, while the sum is 23.

The spelling of 555000020501 in words is "five hundred fifty-five billion, twenty thousand, five hundred one".