531081590 has 16 divisors (see below), whose sum is σ = 1029481488. Its totient is φ = 196091616.

The previous prime is 531081587. The next prime is 531081619. The reversal of 531081590 is 95180135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042492 + ... + 2042751.

It is an arithmetic number, because the mean of its divisors is an integer number (64342593).

Almost surely, 2^531081590 is an apocalyptic number.

531081590 is a deficient number, since it is larger than the sum of its proper divisors (498399898).

531081590 is a wasteful number, since it uses less digits than its factorization.

531081590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085263.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 531081590 is about 23045.2075278137. The cubic root of 531081590 is about 809.8173596237.

The spelling of 531081590 in words is "five hundred thirty-one million, eighty-one thousand, five hundred ninety".