245402213 has 8 divisors (see below), whose sum is σ = 282942528. Its totient is φ = 208482624.

The previous prime is 245402197. The next prime is 245402219. The reversal of 245402213 is 312204542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245402213 - 2⁴ = 245402197 is a prime.

It is a super-2 number, since 2×245402213² = 120444492290594738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245402219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154331 + ... + 155912.

It is an arithmetic number, because the mean of its divisors is an integer number (35367816).

Almost surely, 2^245402213 is an apocalyptic number.

It is an amenable number.

245402213 is a deficient number, since it is larger than the sum of its proper divisors (37540315).

245402213 is a wasteful number, since it uses less digits than its factorization.

245402213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310363.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 245402213 is about 15665.3187966284. The cubic root of 245402213 is about 626.0747060452.

Adding to 245402213 its reverse (312204542), we get a palindrome (557606755).

The spelling of 245402213 in words is "two hundred forty-five million, four hundred two thousand, two hundred thirteen".