531655001 has 2 divisors, whose sum is σ = 531655002. Its totient is φ = 531655000.

The previous prime is 531654953. The next prime is 531655013. The reversal of 531655001 is 100556135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491952400 + 39702601 = 22180^2 + 6301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531655001 is a prime.

It is not a weakly prime, because it can be changed into another prime (531655601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265827500 + 265827501.

It is an arithmetic number, because the mean of its divisors is an integer number (265827501).

Almost surely, 2^531655001 is an apocalyptic number.

It is an amenable number.

531655001 is a deficient number, since it is larger than the sum of its proper divisors (1).

531655001 is an equidigital number, since it uses as much as digits as its factorization.

531655001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 531655001 is about 23057.6451746487. The cubic root of 531655001 is about 810.1087091814.

The spelling of 531655001 in words is "five hundred thirty-one million, six hundred fifty-five thousand, one".