531401579 has 4 divisors (see below), whose sum is σ = 531852720. Its totient is φ = 530950440.

The previous prime is 531401543. The next prime is 531401581. The reversal of 531401579 is 975104135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975104135 = 5 ⋅195020827.

It is a cyclic number.

It is not a de Polignac number, because 531401579 - 2²⁰ = 530353003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531401879) 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, 223799 + ... + 226160.

It is an arithmetic number, because the mean of its divisors is an integer number (132963180).

Almost surely, 2^531401579 is an apocalyptic number.

531401579 is a deficient number, since it is larger than the sum of its proper divisors (451141).

531401579 is a wasteful number, since it uses less digits than its factorization.

531401579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451140.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 531401579 is about 23052.1491189000. The cubic root of 531401579 is about 809.9799715619.

The spelling of 531401579 in words is "five hundred thirty-one million, four hundred one thousand, five hundred seventy-nine".