555951 has 16 divisors (see below), whose sum is σ = 857088. Its totient is φ = 316800.

The previous prime is 555941. The next prime is 555953. The reversal of 555951 is 159555.

It is not a de Polignac number, because 555951 - 2⁷ = 555823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2⁵⁵⁵⁹⁵¹ is an apocalyptic number.

555951 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

555951 is a deficient number, since it is larger than the sum of its proper divisors (301137).

555951 is a wasteful number, since it uses less digits than its factorization.

555951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its digits is 5625, while the sum is 30.

The square root of 555951 is about 745.6212175093. The cubic root of 555951 is about 82.2265695156.

It can be divided in two parts, 55 and 5951, that added together give a palindrome (6006).

The spelling of 555951 in words is "five hundred fifty-five thousand, nine hundred fifty-one".