245131573 has 2 divisors, whose sum is σ = 245131574. Its totient is φ = 245131572.

The previous prime is 245131553. The next prime is 245131589. The reversal of 245131573 is 375131542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228826129 + 16305444 = 15127^2 + 4038^2 .

It is a cyclic number.

It is not a de Polignac number, because 245131573 - 2⁵ = 245131541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245131553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122565786 + 122565787.

It is an arithmetic number, because the mean of its divisors is an integer number (122565787).

Almost surely, 2^245131573 is an apocalyptic number.

It is an amenable number.

245131573 is a deficient number, since it is larger than the sum of its proper divisors (1).

245131573 is an equidigital number, since it uses as much as digits as its factorization.

245131573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 245131573 is about 15656.6782236846. The cubic root of 245131573 is about 625.8444674457.

Subtracting from 245131573 its sum of digits (31), we obtain a palindrome (245131542).

The spelling of 245131573 in words is "two hundred forty-five million, one hundred thirty-one thousand, five hundred seventy-three".