505545131 has 16 divisors (see below), whose sum is σ = 626347008. Its totient is φ = 397332000.

The previous prime is 505545121. The next prime is 505545137. The reversal of 505545131 is 131545505.

It is not a de Polignac number, because 505545131 - 2¹⁰ = 505544107 is a prime.

It is a super-2 number, since 2×505545131² = 511151758955614322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505545094 and 505545103.

It is not an unprimeable number, because it can be changed into a prime (505545137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4655 + ... + 32136.

It is an arithmetic number, because the mean of its divisors is an integer number (39146688).

Almost surely, 2^505545131 is an apocalyptic number.

505545131 is a deficient number, since it is larger than the sum of its proper divisors (120801877).

505545131 is a wasteful number, since it uses less digits than its factorization.

505545131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36962.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 505545131 is about 22484.3307883513. The cubic root of 505545131 is about 796.6238612140.

The spelling of 505545131 in words is "five hundred five million, five hundred forty-five thousand, one hundred thirty-one".