245115133 has 4 divisors (see below), whose sum is σ = 246214528. Its totient is φ = 244015740.

The previous prime is 245115127. The next prime is 245115137. The reversal of 245115133 is 331511542.

It is a happy number.

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 245115133 - 2⁹ = 245114621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245115098 and 245115107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245115137) 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, 549363 + ... + 549808.

It is an arithmetic number, because the mean of its divisors is an integer number (61553632).

Almost surely, 2^245115133 is an apocalyptic number.

It is an amenable number.

245115133 is a deficient number, since it is larger than the sum of its proper divisors (1099395).

245115133 is a wasteful number, since it uses less digits than its factorization.

245115133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099394.

The product of its digits is 1800, while the sum is 25.

The square root of 245115133 is about 15656.1531993015. The cubic root of 245115133 is about 625.8304761662.

Adding to 245115133 its reverse (331511542), we get a palindrome (576626675).

The spelling of 245115133 in words is "two hundred forty-five million, one hundred fifteen thousand, one hundred thirty-three".