531516407 has 8 divisors (see below), whose sum is σ = 587251296. Its totient is φ = 478500352.

The previous prime is 531516397. The next prime is 531516413. The reversal of 531516407 is 704615135.

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 531516407 - 2⁶ = 531516343 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 (531516487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679298 + ... + 680079.

It is an arithmetic number, because the mean of its divisors is an integer number (73406412).

Almost surely, 2^531516407 is an apocalyptic number.

531516407 is a deficient number, since it is larger than the sum of its proper divisors (55734889).

531516407 is a wasteful number, since it uses less digits than its factorization.

531516407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359417.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 531516407 is about 23054.6395981373. The cubic root of 531516407 is about 810.0383089131.

The spelling of 531516407 in words is "five hundred thirty-one million, five hundred sixteen thousand, four hundred seven".