531051401 has 4 divisors (see below), whose sum is σ = 534434052. Its totient is φ = 527668752.

The previous prime is 531051383. The next prime is 531051403. The reversal of 531051401 is 104150135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104150135 = 5 ⋅20830027.

It can be written as a sum of positive squares in 2 ways, for example, as 101525776 + 429525625 = 10076^2 + 20725^2 .

It is a cyclic number.

It is not a de Polignac number, because 531051401 - 2¹⁸ = 530789257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531051403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691090 + ... + 1691403.

It is an arithmetic number, because the mean of its divisors is an integer number (133608513).

Almost surely, 2^531051401 is an apocalyptic number.

It is an amenable number.

531051401 is a deficient number, since it is larger than the sum of its proper divisors (3382651).

531051401 is a wasteful number, since it uses less digits than its factorization.

531051401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382650.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 531051401 is about 23044.5525233188. The cubic root of 531051401 is about 809.8020148129.

The spelling of 531051401 in words is "five hundred thirty-one million, fifty-one thousand, four hundred one".