207241945 has 4 divisors (see below), whose sum is σ = 248690340. Its totient is φ = 165793552.

The previous prime is 207241943. The next prime is 207241967. The reversal of 207241945 is 549142702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549142702 = 2 ⋅274571351.

It can be written as a sum of positive squares in 2 ways, for example, as 94945536 + 112296409 = 9744^2 + 10597^2 .

It is a cyclic number.

It is not a de Polignac number, because 207241945 - 2¹ = 207241943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 207241945.

It is not an unprimeable number, because it can be changed into a prime (207241943) 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 3 ways as a sum of consecutive naturals, for example, 20724190 + ... + 20724199.

It is an arithmetic number, because the mean of its divisors is an integer number (62172585).

Almost surely, 2^207241945 is an apocalyptic number.

It is an amenable number.

207241945 is a deficient number, since it is larger than the sum of its proper divisors (41448395).

207241945 is an equidigital number, since it uses as much as digits as its factorization.

207241945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41448394.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 207241945 is about 14395.9002844560. The cubic root of 207241945 is about 591.7785506416.

The spelling of 207241945 in words is "two hundred seven million, two hundred forty-one thousand, nine hundred forty-five".