506873251 has 4 divisors (see below), whose sum is σ = 508743904. Its totient is φ = 505002600.

The previous prime is 506873221. The next prime is 506873321. The reversal of 506873251 is 152378605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152378605 = 5 ⋅30475721.

It is a cyclic number.

It is not a de Polignac number, because 506873251 - 2¹³ = 506865059 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 506873251.

It is not an unprimeable number, because it can be changed into a prime (506873221) 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, 934920 + ... + 935461.

It is an arithmetic number, because the mean of its divisors is an integer number (127185976).

Almost surely, 2^506873251 is an apocalyptic number.

506873251 is a deficient number, since it is larger than the sum of its proper divisors (1870653).

506873251 is a wasteful number, since it uses less digits than its factorization.

506873251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870652.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 506873251 is about 22513.8457621083. The cubic root of 506873251 is about 797.3208559791.

The spelling of 506873251 in words is "five hundred six million, eight hundred seventy-three thousand, two hundred fifty-one".