506551983 has 16 divisors (see below), whose sum is σ = 772233216. Its totient is φ = 289329120.

The previous prime is 506551973. The next prime is 506551987. The reversal of 506551983 is 389155605.

It is not a de Polignac number, because 506551983 - 2⁴ = 506551967 is a prime.

It is a super-2 number, since 2×506551983² = 513189822962464578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506551987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63010 + ... + 70592.

It is an arithmetic number, because the mean of its divisors is an integer number (48264576).

Almost surely, 2^506551983 is an apocalyptic number.

506551983 is a deficient number, since it is larger than the sum of its proper divisors (265681233).

506551983 is a wasteful number, since it uses less digits than its factorization.

506551983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 506551983 is about 22506.7097328774. The cubic root of 506551983 is about 797.1523669048.

The spelling of 506551983 in words is "five hundred six million, five hundred fifty-one thousand, nine hundred eighty-three".