531513465 has 16 divisors (see below), whose sum is σ = 971910528. Its totient is φ = 242977536.

The previous prime is 531513443. The next prime is 531513469. The reversal of 531513465 is 564315135.

It is not a de Polignac number, because 531513465 - 2⁹ = 531512953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531513469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2530912 + ... + 2531121.

It is an arithmetic number, because the mean of its divisors is an integer number (60744408).

Almost surely, 2^531513465 is an apocalyptic number.

It is an amenable number.

531513465 is a deficient number, since it is larger than the sum of its proper divisors (440397063).

531513465 is a wasteful number, since it uses less digits than its factorization.

531513465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062048.

The product of its digits is 27000, while the sum is 33.

The square root of 531513465 is about 23054.5757931045. The cubic root of 531513465 is about 810.0368143609.

It can be divided in two parts, 53151 and 3465, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 531513465 in words is "five hundred thirty-one million, five hundred thirteen thousand, four hundred sixty-five".