501010055551 has 2 divisors, whose sum is σ = 501010055552. Its totient is φ = 501010055550.

The previous prime is 501010055527. The next prime is 501010055569. The reversal of 501010055551 is 155550010105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501010055551 - 2²⁵ = 500976501119 is a prime.

It is a super-2 number, since 2×501010055551² (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 (501010052551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250505027775 + 250505027776.

It is an arithmetic number, because the mean of its divisors is an integer number (250505027776).

Almost surely, 2^501010055551 is an apocalyptic number.

501010055551 is a deficient number, since it is larger than the sum of its proper divisors (1).

501010055551 is an equidigital number, since it uses as much as digits as its factorization.

501010055551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3125, while the sum is 28.

Adding to 501010055551 its reverse (155550010105), we get a palindrome (656560065656).

The spelling of 501010055551 in words is "five hundred one billion, ten million, fifty-five thousand, five hundred fifty-one".