245147457 has 8 divisors (see below), whose sum is σ = 326935840. Its totient is φ = 163395360.

The previous prime is 245147453. The next prime is 245147543. The reversal of 245147457 is 754741542.

245147457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 245147457 - 2² = 245147453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245147453) 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, 20082 + ... + 29892.

It is an arithmetic number, because the mean of its divisors is an integer number (40866980).

Almost surely, 2^245147457 is an apocalyptic number.

It is an amenable number.

245147457 is a deficient number, since it is larger than the sum of its proper divisors (81788383).

245147457 is an equidigital number, since it uses as much as digits as its factorization.

245147457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18143.

The product of its digits is 156800, while the sum is 39.

The square root of 245147457 is about 15657.1854750463. The cubic root of 245147457 is about 625.8579849466.

Adding to 245147457 its reverse (754741542), we get a palindrome (999888999).

The spelling of 245147457 in words is "two hundred forty-five million, one hundred forty-seven thousand, four hundred fifty-seven".