501105550551 has 16 divisors (see below), whose sum is σ = 679177863168. Its totient is φ = 328553157600.

The previous prime is 501105550541. The next prime is 501105550591. The reversal of 501105550551 is 155055501105.

It is not a de Polignac number, because 501105550551 - 2⁷ = 501105550423 is a prime.

It is a super-2 number, since 2×501105550551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501105550511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351306 + ... + 1681736.

It is an arithmetic number, because the mean of its divisors is an integer number (42448616448).

Almost surely, 2^501105550551 is an apocalyptic number.

501105550551 is a deficient number, since it is larger than the sum of its proper divisors (178072312617).

501105550551 is a wasteful number, since it uses less digits than its factorization.

501105550551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338782.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 501105550551 in words is "five hundred one billion, one hundred five million, five hundred fifty thousand, five hundred fifty-one".