531045001 has 4 divisors (see below), whose sum is σ = 541064772. Its totient is φ = 521025232.

The previous prime is 531044993. The next prime is 531045007. The reversal of 531045001 is 100540135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100540135 = 5 ⋅20108027.

It can be written as a sum of positive squares in 2 ways, for example, as 373416976 + 157628025 = 19324^2 + 12555^2 .

It is a cyclic number.

It is not a de Polignac number, because 531045001 - 2³ = 531044993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531045001.

It is not an unprimeable number, because it can be changed into a prime (531045007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009806 + ... + 5009911.

It is an arithmetic number, because the mean of its divisors is an integer number (135266193).

Almost surely, 2^531045001 is an apocalyptic number.

It is an amenable number.

531045001 is a deficient number, since it is larger than the sum of its proper divisors (10019771).

531045001 is a wasteful number, since it uses less digits than its factorization.

531045001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10019770.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 531045001 is about 23044.4136614495. The cubic root of 531045001 is about 809.7987616729.

Adding to 531045001 its reverse (100540135), we get a palindrome (631585136).

The spelling of 531045001 in words is "five hundred thirty-one million, forty-five thousand, one".