245404545 has 16 divisors (see below), whose sum is σ = 393150912. Its totient is φ = 130714560.

The previous prime is 245404519. The next prime is 245404547. The reversal of 245404545 is 545404542.

It is not a de Polignac number, because 245404545 - 2¹⁷ = 245273473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245404547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2079 + ... + 22251.

It is an arithmetic number, because the mean of its divisors is an integer number (24571932).

Almost surely, 2^245404545 is an apocalyptic number.

It is an amenable number.

245404545 is a deficient number, since it is larger than the sum of its proper divisors (147746367).

245404545 is a wasteful number, since it uses less digits than its factorization.

245404545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992.

The product of its (nonzero) digits is 64000, while the sum is 33.

The square root of 245404545 is about 15665.3932283872. The cubic root of 245404545 is about 626.0766891862.

The spelling of 245404545 in words is "two hundred forty-five million, four hundred four thousand, five hundred forty-five".