531225887 has 4 divisors (see below), whose sum is σ = 535408896. Its totient is φ = 527042880.

The previous prime is 531225859. The next prime is 531225901. The reversal of 531225887 is 788522135.

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 531225887 - 2¹⁶ = 531160351 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 (531225847) 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, 2091314 + ... + 2091567.

It is an arithmetic number, because the mean of its divisors is an integer number (133852224).

Almost surely, 2^531225887 is an apocalyptic number.

531225887 is a deficient number, since it is larger than the sum of its proper divisors (4183009).

531225887 is a wasteful number, since it uses less digits than its factorization.

531225887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183008.

The product of its digits is 134400, while the sum is 41.

The square root of 531225887 is about 23048.3380528836. The cubic root of 531225887 is about 809.8906965247.

The spelling of 531225887 in words is "five hundred thirty-one million, two hundred twenty-five thousand, eight hundred eighty-seven".