531285149 has 8 divisors (see below), whose sum is σ = 537125472. Its totient is φ = 525456400.

The previous prime is 531285127. The next prime is 531285151. The reversal of 531285149 is 941582135.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 531285149 - 2¹² = 531281053 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 (531287149) 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 7 ways as a sum of consecutive naturals, for example, 115202 + ... + 119724.

It is an arithmetic number, because the mean of its divisors is an integer number (67140684).

Almost surely, 2^531285149 is an apocalyptic number.

It is an amenable number.

531285149 is a deficient number, since it is larger than the sum of its proper divisors (5840323).

531285149 is a wasteful number, since it uses less digits than its factorization.

531285149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787.

The product of its digits is 43200, while the sum is 38.

The square root of 531285149 is about 23049.6236194867. The cubic root of 531285149 is about 809.9208117474.

The spelling of 531285149 in words is "five hundred thirty-one million, two hundred eighty-five thousand, one hundred forty-nine".