245513451 has 4 divisors (see below), whose sum is σ = 327351272. Its totient is φ = 163675632.

The previous prime is 245513423. The next prime is 245513491. The reversal of 245513451 is 154315542.

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

It is not a de Polignac number, because 245513451 - 2²³ = 237124843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245513491) 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, 40918906 + ... + 40918911.

It is an arithmetic number, because the mean of its divisors is an integer number (81837818).

Almost surely, 2^245513451 is an apocalyptic number.

245513451 is a deficient number, since it is larger than the sum of its proper divisors (81837821).

245513451 is an equidigital number, since it uses as much as digits as its factorization.

245513451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81837820.

The product of its digits is 12000, while the sum is 30.

The square root of 245513451 is about 15668.8688487714. The cubic root of 245513451 is about 626.1692892427.

Adding to 245513451 its reverse (154315542), we get a palindrome (399828993).

The spelling of 245513451 in words is "two hundred forty-five million, five hundred thirteen thousand, four hundred fifty-one".