531216051 has 16 divisors (see below), whose sum is σ = 756597024. Its totient is φ = 330358784.

The previous prime is 531216029. The next prime is 531216053. The reversal of 531216051 is 150612135.

It is a cyclic number.

It is not a de Polignac number, because 531216051 - 2¹⁴ = 531199667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531216053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40326 + ... + 51851.

It is an arithmetic number, because the mean of its divisors is an integer number (47287314).

Almost surely, 2^531216051 is an apocalyptic number.

531216051 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

531216051 is a deficient number, since it is larger than the sum of its proper divisors (225380973).

531216051 is a wasteful number, since it uses less digits than its factorization.

531216051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92310.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 531216051 is about 23048.1246742550. The cubic root of 531216051 is about 809.8856979392.

Adding to 531216051 its reverse (150612135), we get a palindrome (681828186).

The spelling of 531216051 in words is "five hundred thirty-one million, two hundred sixteen thousand, fifty-one".