531457 has 2 divisors, whose sum is σ = 531458. Its totient is φ = 531456.

The previous prime is 531383. The next prime is 531481. The reversal of 531457 is 754135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531441 + 16 = 729^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 531457 - 2¹⁵ = 498689 is a prime.

It is an Ulam number.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (531497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265728 + 265729.

It is an arithmetic number, because the mean of its divisors is an integer number (265729).

531457 is a Friedman number, since it can be written as 3^(7+5)+4*(5-1), using all its digits and the basic arithmetic operations.

It is a Proth number, since it is equal to 519 ⋅ 2¹⁰ + 1 and 519 < 2¹⁰.

2⁵³¹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

531457 is a deficient number, since it is larger than the sum of its proper divisors (1).

531457 is an equidigital number, since it uses as much as digits as its factorization.

531457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 25.

The square root of 531457 is about 729.0109738543. The cubic root of 531457 is about 81.0008128761. Note that the first 3 decimals are identical.

The spelling of 531457 in words is "five hundred thirty-one thousand, four hundred fifty-seven".