531340555 has 4 divisors (see below), whose sum is σ = 637608672. Its totient is φ = 425072440.

The previous prime is 531340553. The next prime is 531340573. The reversal of 531340555 is 555043135.

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

It is not a de Polignac number, because 531340555 - 2¹ = 531340553 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531340553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53134051 + ... + 53134060.

It is an arithmetic number, because the mean of its divisors is an integer number (159402168).

Almost surely, 2^531340555 is an apocalyptic number.

531340555 is a deficient number, since it is larger than the sum of its proper divisors (106268117).

531340555 is a wasteful number, since it uses less digits than its factorization.

531340555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106268116.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 531340555 is about 23050.8254732884. The cubic root of 531340555 is about 809.9489654378.

The spelling of 531340555 in words is "five hundred thirty-one million, three hundred forty thousand, five hundred fifty-five".