245213533 has 4 divisors (see below), whose sum is σ = 245366428. Its totient is φ = 245060640.

The previous prime is 245213509. The next prime is 245213539. The reversal of 245213533 is 335312542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220879044 + 24334489 = 14862^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 245213533 - 2⁹ = 245213021 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 (245213539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74016 + ... + 77257.

It is an arithmetic number, because the mean of its divisors is an integer number (61341607).

Almost surely, 2^245213533 is an apocalyptic number.

It is an amenable number.

245213533 is a deficient number, since it is larger than the sum of its proper divisors (152895).

245213533 is a wasteful number, since it uses less digits than its factorization.

245213533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152894.

The product of its digits is 10800, while the sum is 28.

The square root of 245213533 is about 15659.2954183769. The cubic root of 245213533 is about 625.9142102593.

Subtracting 245213533 from its reverse (335312542), we obtain a palindrome (90099009).

The spelling of 245213533 in words is "two hundred forty-five million, two hundred thirteen thousand, five hundred thirty-three".