531369505 has 8 divisors (see below), whose sum is σ = 643286952. Its totient is φ = 421333248.

The previous prime is 531369473. The next prime is 531369541. The reversal of 531369505 is 505963135.

It can be written as a sum of positive squares in 4 ways, for example, as 7096896 + 524272609 = 2664^2 + 22897^2 .

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 531369505 - 2⁵ = 531369473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469674 + ... + 470803.

It is an arithmetic number, because the mean of its divisors is an integer number (80410869).

Almost surely, 2^531369505 is an apocalyptic number.

It is an amenable number.

531369505 is a deficient number, since it is larger than the sum of its proper divisors (111917447).

531369505 is a wasteful number, since it uses less digits than its factorization.

531369505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940595.

The product of its (nonzero) digits is 60750, while the sum is 37.

The square root of 531369505 is about 23051.4534248928. The cubic root of 531369505 is about 809.9636751479.

The spelling of 531369505 in words is "five hundred thirty-one million, three hundred sixty-nine thousand, five hundred five".