505622101 has 4 divisors (see below), whose sum is σ = 505799532. Its totient is φ = 505444672.

The previous prime is 505622093. The next prime is 505622119. The reversal of 505622101 is 101226505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101226505 = 5 ⋅20245301.

It can be written as a sum of positive squares in 2 ways, for example, as 184280625 + 321341476 = 13575^2 + 17926^2 .

It is a cyclic number.

It is not a de Polignac number, because 505622101 - 2³ = 505622093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505622191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84370 + ... + 90163.

It is an arithmetic number, because the mean of its divisors is an integer number (126449883).

Almost surely, 2^505622101 is an apocalyptic number.

It is an amenable number.

505622101 is a deficient number, since it is larger than the sum of its proper divisors (177431).

505622101 is a wasteful number, since it uses less digits than its factorization.

505622101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177430.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 505622101 is about 22486.0423596506. The cubic root of 505622101 is about 796.6642882193.

Adding to 505622101 its reverse (101226505), we get a palindrome (606848606).

The spelling of 505622101 in words is "five hundred five million, six hundred twenty-two thousand, one hundred one".