531087478 has 8 divisors (see below), whose sum is σ = 796730472. Its totient is φ = 265510656.

The previous prime is 531087461. The next prime is 531087481. The reversal of 531087478 is 874780135.

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

It is a congruent number.

It is an unprimeable number.

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, 17701 + ... + 37087.

It is an arithmetic number, because the mean of its divisors is an integer number (99591309).

Almost surely, 2^531087478 is an apocalyptic number.

531087478 is a deficient number, since it is larger than the sum of its proper divisors (265642994).

531087478 is a wasteful number, since it uses less digits than its factorization.

531087478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33086.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 531087478 is about 23045.3352763634. The cubic root of 531087478 is about 809.8203523760.

The spelling of 531087478 in words is "five hundred thirty-one million, eighty-seven thousand, four hundred seventy-eight".