538463531 has 4 divisors (see below), whose sum is σ = 547290864. Its totient is φ = 529636200.

The previous prime is 538463507. The next prime is 538463533. The reversal of 538463531 is 135364835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 538463531 - 2⁶ = 538463467 is a prime.

It is a super-2 number, since 2×538463531² = 579885948433975922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538463533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4413575 + ... + 4413696.

It is an arithmetic number, because the mean of its divisors is an integer number (136822716).

Almost surely, 2^538463531 is an apocalyptic number.

538463531 is a deficient number, since it is larger than the sum of its proper divisors (8827333).

538463531 is an equidigital number, since it uses as much as digits as its factorization.

538463531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827332.

The product of its digits is 129600, while the sum is 38.

The square root of 538463531 is about 23204.8169783776. The cubic root of 538463531 is about 813.5522145420.

The spelling of 538463531 in words is "five hundred thirty-eight million, four hundred sixty-three thousand, five hundred thirty-one".