531105245 has 16 divisors (see below), whose sum is σ = 736164288. Its totient is φ = 363536640.

The previous prime is 531105241. The next prime is 531105269. The reversal of 531105245 is 542501135.

It is not a de Polignac number, because 531105245 - 2² = 531105241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531105241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283079 + ... + 284948.

It is an arithmetic number, because the mean of its divisors is an integer number (46010268).

Almost surely, 2^531105245 is an apocalyptic number.

531105245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

531105245 is a deficient number, since it is larger than the sum of its proper divisors (205059043).

531105245 is a wasteful number, since it uses less digits than its factorization.

531105245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568060.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 531105245 is about 23045.7207524521. The cubic root of 531105245 is about 809.8293828518.

The spelling of 531105245 in words is "five hundred thirty-one million, one hundred five thousand, two hundred forty-five".