506376551 has 4 divisors (see below), whose sum is σ = 506433312. Its totient is φ = 506319792.

The previous prime is 506376517. The next prime is 506376587. The reversal of 506376551 is 155673605.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 155673605 = 5 ⋅31134721.

It is a cyclic number.

It is not a de Polignac number, because 506376551 - 2¹⁸ = 506114407 is a prime.

It is a super-2 number, since 2×506376551² = 512834422805311202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506376251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11750 + ... + 33923.

It is an arithmetic number, because the mean of its divisors is an integer number (126608328).

Almost surely, 2^506376551 is an apocalyptic number.

506376551 is a deficient number, since it is larger than the sum of its proper divisors (56761).

506376551 is a wasteful number, since it uses less digits than its factorization.

506376551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56760.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 506376551 is about 22502.8120687171. The cubic root of 506376551 is about 797.0603314798.

The spelling of 506376551 in words is "five hundred six million, three hundred seventy-six thousand, five hundred fifty-one".