531451601 has 2 divisors, whose sum is σ = 531451602. Its totient is φ = 531451600.

The previous prime is 531451517. The next prime is 531451619. The reversal of 531451601 is 106154135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501760000 + 29691601 = 22400^2 + 5449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531451601 is a prime.

It is not a weakly prime, because it can be changed into another prime (531451681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265725800 + 265725801.

It is an arithmetic number, because the mean of its divisors is an integer number (265725801).

Almost surely, 2^531451601 is an apocalyptic number.

It is an amenable number.

531451601 is a deficient number, since it is larger than the sum of its proper divisors (1).

531451601 is an equidigital number, since it uses as much as digits as its factorization.

531451601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 531451601 is about 23053.2340681302. The cubic root of 531451601 is about 810.0053858302.

The spelling of 531451601 in words is "five hundred thirty-one million, four hundred fifty-one thousand, six hundred one".