245532545 has 4 divisors (see below), whose sum is σ = 294639060. Its totient is φ = 196426032.

The previous prime is 245532527. The next prime is 245532557. The reversal of 245532545 is 545235542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545235542 = 2 ⋅272617771.

It can be written as a sum of positive squares in 2 ways, for example, as 57623281 + 187909264 = 7591^2 + 13708^2 .

It is a cyclic number.

It is not a de Polignac number, because 245532545 - 2⁸ = 245532289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24553250 + ... + 24553259.

It is an arithmetic number, because the mean of its divisors is an integer number (73659765).

Almost surely, 2^245532545 is an apocalyptic number.

It is an amenable number.

245532545 is a deficient number, since it is larger than the sum of its proper divisors (49106515).

245532545 is an equidigital number, since it uses as much as digits as its factorization.

245532545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49106514.

The product of its digits is 120000, while the sum is 35.

The square root of 245532545 is about 15669.4781342583. The cubic root of 245532545 is about 626.1855215733.

The spelling of 245532545 in words is "two hundred forty-five million, five hundred thirty-two thousand, five hundred forty-five".