245481545 has 4 divisors (see below), whose sum is σ = 294577860. Its totient is φ = 196385232.

The previous prime is 245481521. The next prime is 245481557. The reversal of 245481545 is 545184542.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50013184 + 195468361 = 7072^2 + 13981^2 .

It is a cyclic number.

It is not a de Polignac number, because 245481545 - 2⁸ = 245481289 is a prime.

It is a super-2 number, since 2×245481545² = 120522377871174050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245481499 and 245481508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24548150 + ... + 24548159.

It is an arithmetic number, because the mean of its divisors is an integer number (73644465).

Almost surely, 2^245481545 is an apocalyptic number.

It is an amenable number.

245481545 is a deficient number, since it is larger than the sum of its proper divisors (49096315).

245481545 is an equidigital number, since it uses as much as digits as its factorization.

245481545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49096314.

The product of its digits is 128000, while the sum is 38.

The square root of 245481545 is about 15667.8506822091. The cubic root of 245481545 is about 626.1421632030.

The spelling of 245481545 in words is "two hundred forty-five million, four hundred eighty-one thousand, five hundred forty-five".