531626 has 4 divisors (see below), whose sum is σ = 797442. Its totient is φ = 265812.

The previous prime is 531623. The next prime is 531631. The reversal of 531626 is 626135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 442225 + 89401 = 665^2 + 299^2 .

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (531623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132905 + ... + 132908.

2⁵³¹⁶²⁶ is an apocalyptic number.

531626 is a deficient number, since it is larger than the sum of its proper divisors (265816).

531626 is a wasteful number, since it uses less digits than its factorization.

531626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265815.

The product of its digits is 1080, while the sum is 23.

The square root of 531626 is about 729.1268751047. The cubic root of 531626 is about 81.0093978833.

The spelling of 531626 in words is "five hundred thirty-one thousand, six hundred twenty-six".