505527550805 has 4 divisors (see below), whose sum is σ = 606633060972. Its totient is φ = 404422040640.

The previous prime is 505527550777. The next prime is 505527550831. The reversal of 505527550805 is 508055725505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103411766929 + 402115783876 = 321577^2 + 634126^2 .

It is not a de Polignac number, because 505527550805 - 2⁶ = 505527550741 is a prime.

It is a super-2 number, since 2×505527550805² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505527550805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50552755076 + ... + 50552755085.

It is an arithmetic number, because the mean of its divisors is an integer number (151658265243).

Almost surely, 2^505527550805 is an apocalyptic number.

It is an amenable number.

505527550805 is a deficient number, since it is larger than the sum of its proper divisors (101105510167).

505527550805 is a wasteful number, since it uses less digits than its factorization.

505527550805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101105510166.

The product of its (nonzero) digits is 1750000, while the sum is 47.

The spelling of 505527550805 in words is "five hundred five billion, five hundred twenty-seven million, five hundred fifty thousand, eight hundred five".