245728151 has 4 divisors (see below), whose sum is σ = 246182904. Its totient is φ = 245273400.

The previous prime is 245728139. The next prime is 245728169. The reversal of 245728151 is 151827542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151827542 = 2 ⋅75913771.

It is a cyclic number.

It is not a de Polignac number, because 245728151 - 2²² = 241533847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245727151) 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, 226565 + ... + 227646.

It is an arithmetic number, because the mean of its divisors is an integer number (61545726).

Almost surely, 2^245728151 is an apocalyptic number.

245728151 is a deficient number, since it is larger than the sum of its proper divisors (454753).

245728151 is an equidigital number, since it uses as much as digits as its factorization.

245728151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454752.

The product of its digits is 22400, while the sum is 35.

The square root of 245728151 is about 15675.7185162276. The cubic root of 245728151 is about 626.3517631239.

It can be divided in two parts, 24572 and 8151, that added together give a palindrome (32723).

The spelling of 245728151 in words is "two hundred forty-five million, seven hundred twenty-eight thousand, one hundred fifty-one".