505502051 has 4 divisors (see below), whose sum is σ = 505609104. Its totient is φ = 505395000.

The previous prime is 505502033. The next prime is 505502083. The reversal of 505502051 is 150205505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150205505 = 5 ⋅30041101.

It is a cyclic number.

It is not a de Polignac number, because 505502051 - 2¹⁸ = 505239907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505502351) 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, 46100 + ... + 56001.

It is an arithmetic number, because the mean of its divisors is an integer number (126402276).

Almost surely, 2^505502051 is an apocalyptic number.

505502051 is a deficient number, since it is larger than the sum of its proper divisors (107053).

505502051 is a wasteful number, since it uses less digits than its factorization.

505502051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107052.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 505502051 is about 22483.3727674475. The cubic root of 505502051 is about 796.6012324853.

Adding to 505502051 its reverse (150205505), we get a palindrome (655707556).

The spelling of 505502051 in words is "five hundred five million, five hundred two thousand, fifty-one".