505553151 has 4 divisors (see below), whose sum is σ = 674070872. Its totient is φ = 337035432.

The previous prime is 505553137. The next prime is 505553173. The reversal of 505553151 is 151355505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505553151 - 2⁵ = 505553119 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 (505553351) 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, 84258856 + ... + 84258861.

It is an arithmetic number, because the mean of its divisors is an integer number (168517718).

Almost surely, 2^505553151 is an apocalyptic number.

505553151 is a deficient number, since it is larger than the sum of its proper divisors (168517721).

505553151 is a wasteful number, since it uses less digits than its factorization.

505553151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168517720.

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 505553151 is about 22484.5091340683. The cubic root of 505553151 is about 796.6280737555.

The spelling of 505553151 in words is "five hundred five million, five hundred fifty-three thousand, one hundred fifty-one".