531087479 has 8 divisors (see below), whose sum is σ = 572542992. Its totient is φ = 489718080.

The previous prime is 531087461. The next prime is 531087481. The reversal of 531087479 is 974780135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531087479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531087499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8414 + ... + 33659.

It is an arithmetic number, because the mean of its divisors is an integer number (71567874).

Almost surely, 2^531087479 is an apocalyptic number.

531087479 is a deficient number, since it is larger than the sum of its proper divisors (41455513).

531087479 is a wasteful number, since it uses less digits than its factorization.

531087479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43057.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 531087479 is about 23045.3352980598. The cubic root of 531087479 is about 809.8203528843.

The spelling of 531087479 in words is "five hundred thirty-one million, eighty-seven thousand, four hundred seventy-nine".