505525501 has 32 divisors (see below), whose sum is σ = 576398592. Its totient is φ = 440294400.

The previous prime is 505525469. The next prime is 505525507. The reversal of 505525501 is 105525505.

It is a happy number.

It is not a de Polignac number, because 505525501 - 2⁵ = 505525469 is a prime.

It is a super-2 number, since 2×505525501² = 511112064322602002, which 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 505525501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505525507) 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 in 31 ways as a sum of consecutive naturals, for example, 3347776 + ... + 3347926.

It is an arithmetic number, because the mean of its divisors is an integer number (18012456).

Almost surely, 2^505525501 is an apocalyptic number.

It is an amenable number.

505525501 is a deficient number, since it is larger than the sum of its proper divisors (70873091).

505525501 is a wasteful number, since it uses less digits than its factorization.

505525501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

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

The square root of 505525501 is about 22483.8942578905. The cubic root of 505525501 is about 796.6135502791.

The spelling of 505525501 in words is "five hundred five million, five hundred twenty-five thousand, five hundred one".