505501653 has 4 divisors (see below), whose sum is σ = 674002208. Its totient is φ = 337001100.

The previous prime is 505501627. The next prime is 505501663. The reversal of 505501653 is 356105505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 505501653 - 2⁶ = 505501589 is a prime.

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 505501653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505501603) 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, 84250273 + ... + 84250278.

It is an arithmetic number, because the mean of its divisors is an integer number (168500552).

Almost surely, 2^505501653 is an apocalyptic number.

It is an amenable number.

505501653 is a deficient number, since it is larger than the sum of its proper divisors (168500555).

505501653 is a wasteful number, since it uses less digits than its factorization.

505501653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168500554.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 505501653 is about 22483.3639164605. The cubic root of 505501653 is about 796.6010234210.

The spelling of 505501653 in words is "five hundred five million, five hundred one thousand, six hundred fifty-three".