531955 has 4 divisors (see below), whose sum is σ = 638352. Its totient is φ = 425560.

The previous prime is 531919. The next prime is 531977. The reversal of 531955 is 559135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559135 = 5 ⋅111827.

It is not a de Polignac number, because 531955 - 2⁷ = 531827 is a prime.

It is a super-2 number, since 2×531955² = 565952244050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53191 + ... + 53200.

It is an arithmetic number, because the mean of its divisors is an integer number (159588).

2⁵³¹⁹⁵⁵ is an apocalyptic number.

531955 is a deficient number, since it is larger than the sum of its proper divisors (106397).

531955 is a wasteful number, since it uses less digits than its factorization.

531955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106396.

The product of its digits is 3375, while the sum is 28.

The square root of 531955 is about 729.3524525221. The cubic root of 531955 is about 81.0261054910.

The spelling of 531955 in words is "five hundred thirty-one thousand, nine hundred fifty-five".