531010001 has 4 divisors (see below), whose sum is σ = 533213604. Its totient is φ = 528806400.

The previous prime is 531009991. The next prime is 531010003. The reversal of 531010001 is 100010135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100010135 = 5 ⋅20002027.

It can be written as a sum of positive squares in 2 ways, for example, as 475894225 + 55115776 = 21815^2 + 7424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531010003) 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, 1101440 + ... + 1101921.

It is an arithmetic number, because the mean of its divisors is an integer number (133303401).

Almost surely, 2^531010001 is an apocalyptic number.

It is an amenable number.

531010001 is a deficient number, since it is larger than the sum of its proper divisors (2203603).

531010001 is a wasteful number, since it uses less digits than its factorization.

531010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203602.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 531010001 is about 23043.6542458005. The cubic root of 531010001 is about 809.7809706010.

Adding to 531010001 its reverse (100010135), we get a palindrome (631020136).

The spelling of 531010001 in words is "five hundred thirty-one million, ten thousand, one".