555000020551 has 2 divisors, whose sum is σ = 555000020552. Its totient is φ = 555000020550.

The previous prime is 555000020507. The next prime is 555000020567. The reversal of 555000020551 is 155020000555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555000020551 - 2¹⁵ = 554999987783 is a prime.

It is a super-2 number, since 2×555000020551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555000020501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277500010275 + 277500010276.

It is an arithmetic number, because the mean of its divisors is an integer number (277500010276).

Almost surely, 2^555000020551 is an apocalyptic number.

555000020551 is a deficient number, since it is larger than the sum of its proper divisors (1).

555000020551 is an equidigital number, since it uses as much as digits as its factorization.

555000020551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6250, while the sum is 28.

The spelling of 555000020551 in words is "five hundred fifty-five billion, twenty thousand, five hundred fifty-one".