531454109 has 2 divisors, whose sum is σ = 531454110. Its totient is φ = 531454108.

The previous prime is 531454103. The next prime is 531454141. The reversal of 531454109 is 901454135.

It is an a-pointer prime, because the next prime (531454141) can be obtained adding 531454109 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528862009 + 2592100 = 22997^2 + 1610^2 .

It is a cyclic number.

It is not a de Polignac number, because 531454109 - 2¹² = 531450013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531454103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265727054 + 265727055.

It is an arithmetic number, because the mean of its divisors is an integer number (265727055).

Almost surely, 2^531454109 is an apocalyptic number.

It is an amenable number.

531454109 is a deficient number, since it is larger than the sum of its proper divisors (1).

531454109 is an equidigital number, since it uses as much as digits as its factorization.

531454109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 531454109 is about 23053.2884639047. The cubic root of 531454109 is about 810.0066600072.

The spelling of 531454109 in words is "five hundred thirty-one million, four hundred fifty-four thousand, one hundred nine".