531551225 has 6 divisors (see below), whose sum is σ = 659123550. Its totient is φ = 425240960.

The previous prime is 531551221. The next prime is 531551231. The reversal of 531551225 is 522155135.

It can be written as a sum of positive squares in 3 ways, for example, as 3286969 + 528264256 = 1813^2 + 22984^2 .

It is not a de Polignac number, because 531551225 - 2² = 531551221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531551221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10631000 + ... + 10631049.

It is an arithmetic number, because the mean of its divisors is an integer number (109853925).

Almost surely, 2^531551225 is an apocalyptic number.

It is an amenable number.

531551225 is a deficient number, since it is larger than the sum of its proper divisors (127572325).

531551225 is a wasteful number, since it uses less digits than its factorization.

531551225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21262059 (or 21262054 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 531551225 is about 23055.3947049275. The cubic root of 531551225 is about 810.0559962304.

The spelling of 531551225 in words is "five hundred thirty-one million, five hundred fifty-one thousand, two hundred twenty-five".