531520216 has 16 divisors (see below), whose sum is σ = 1009216800. Its totient is φ = 262395744.

The previous prime is 531520201. The next prime is 531520229. The reversal of 531520216 is 612025135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419875 + ... + 421138.

It is an arithmetic number, because the mean of its divisors is an integer number (63076050).

Almost surely, 2^531520216 is an apocalyptic number.

It is an amenable number.

531520216 is a deficient number, since it is larger than the sum of its proper divisors (477696584).

531520216 is a wasteful number, since it uses less digits than its factorization.

531520216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841098 (or 841094 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 531520216 is about 23054.7222060904. The cubic root of 531520216 is about 810.0402438980.

The spelling of 531520216 in words is "five hundred thirty-one million, five hundred twenty thousand, two hundred sixteen".