245021353 has 4 divisors (see below), whose sum is σ = 250719568. Its totient is φ = 239323140.

The previous prime is 245021347. The next prime is 245021389. The reversal of 245021353 is 353120542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245021353 - 2¹⁷ = 244890281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245021393) 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, 2849043 + ... + 2849128.

It is an arithmetic number, because the mean of its divisors is an integer number (62679892).

Almost surely, 2^245021353 is an apocalyptic number.

It is an amenable number.

245021353 is a deficient number, since it is larger than the sum of its proper divisors (5698215).

245021353 is an equidigital number, since it uses as much as digits as its factorization.

245021353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698214.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 245021353 is about 15653.1579242017. The cubic root of 245021353 is about 625.7506526321.

Adding to 245021353 its reverse (353120542), we get a palindrome (598141895).

The spelling of 245021353 in words is "two hundred forty-five million, twenty-one thousand, three hundred fifty-three".