531405255 has 32 divisors (see below), whose sum is σ = 881123328. Its totient is φ = 273196800.

The previous prime is 531405253. The next prime is 531405257. The reversal of 531405255 is 552504135.

It is a happy number.

531405255 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (531405253) and next prime (531405257).

It is not a de Polignac number, because 531405255 - 2¹ = 531405253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531405253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123907 + ... + 128123.

It is an arithmetic number, because the mean of its divisors is an integer number (27535104).

Almost surely, 2^531405255 is an apocalyptic number.

531405255 is a deficient number, since it is larger than the sum of its proper divisors (349718073).

531405255 is a wasteful number, since it uses less digits than its factorization.

531405255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 531405255 is about 23052.2288510244. The cubic root of 531405255 is about 809.9818392514.

The spelling of 531405255 in words is "five hundred thirty-one million, four hundred five thousand, two hundred fifty-five".