506155001 has 4 divisors (see below), whose sum is σ = 552169104. Its totient is φ = 460140900.

The previous prime is 506154967. The next prime is 506155007. The reversal of 506155001 is 100551605.

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 a cyclic number.

It is not a de Polignac number, because 506155001 - 2¹⁴ = 506138617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506155007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23007035 + ... + 23007056.

It is an arithmetic number, because the mean of its divisors is an integer number (138042276).

Almost surely, 2^506155001 is an apocalyptic number.

It is an amenable number.

506155001 is a deficient number, since it is larger than the sum of its proper divisors (46014103).

506155001 is a wasteful number, since it uses less digits than its factorization.

506155001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46014102.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 506155001 is about 22497.8888120641. Note that the first 4 decimals coincide. The cubic root of 506155001 is about 796.9440711750.

The spelling of 506155001 in words is "five hundred six million, one hundred fifty-five thousand, one".