245445507 has 24 divisors (see below), whose sum is σ = 387504000. Its totient is φ = 149034240.

The previous prime is 245445493. The next prime is 245445521. The reversal of 245445507 is 705544542.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (245445493) and next prime (245445521).

It is not a de Polignac number, because 245445507 - 2¹⁰ = 245444483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245445527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21132 + ... + 30617.

It is an arithmetic number, because the mean of its divisors is an integer number (16146000).

Almost surely, 2^245445507 is an apocalyptic number.

245445507 is a deficient number, since it is larger than the sum of its proper divisors (142058493).

245445507 is a wasteful number, since it uses less digits than its factorization.

245445507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51803 (or 51800 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 36.

The square root of 245445507 is about 15666.7005779775. The cubic root of 245445507 is about 626.1115213672. Note that the first 3 decimals are identical.

It can be divided in two parts, 2454 and 45507, that added together give a square (47961 = 219²).

The spelling of 245445507 in words is "two hundred forty-five million, four hundred forty-five thousand, five hundred seven".