245134451 has 4 divisors (see below), whose sum is σ = 245336112. Its totient is φ = 244932792.

The previous prime is 245134433. The next prime is 245134489. The reversal of 245134451 is 154431542.

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

It is a cyclic number.

It is not a de Polignac number, because 245134451 - 2¹⁸ = 244872307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245134151) 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, 98996 + ... + 101441.

It is an arithmetic number, because the mean of its divisors is an integer number (61334028).

Almost surely, 2^245134451 is an apocalyptic number.

245134451 is a deficient number, since it is larger than the sum of its proper divisors (201661).

245134451 is a wasteful number, since it uses less digits than its factorization.

245134451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201660.

The product of its digits is 9600, while the sum is 29.

The square root of 245134451 is about 15656.7701330766. The cubic root of 245134451 is about 625.8469167063.

Adding to 245134451 its reverse (154431542), we get a palindrome (399565993).

The spelling of 245134451 in words is "two hundred forty-five million, one hundred thirty-four thousand, four hundred fifty-one".