3545650121 has 4 divisors (see below), whose sum is σ = 3818392452. Its totient is φ = 3272907792.

The previous prime is 3545650109. The next prime is 3545650133. The reversal of 3545650121 is 1210565453.

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

It is an interprime number because it is at equal distance from previous prime (3545650109) and next prime (3545650133).

It can be written as a sum of positive squares in 2 ways, for example, as 1247502400 + 2298147721 = 35320^2 + 47939^2 .

It is a cyclic number.

It is not a de Polignac number, because 3545650121 - 2⁶ = 3545650057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3545650181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136371146 + ... + 136371171.

It is an arithmetic number, because the mean of its divisors is an integer number (954598113).

Almost surely, 2^3545650121 is an apocalyptic number.

It is an amenable number.

3545650121 is a deficient number, since it is larger than the sum of its proper divisors (272742331).

3545650121 is a wasteful number, since it uses less digits than its factorization.

3545650121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272742330.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 3545650121 is about 59545.3618764720. The cubic root of 3545650121 is about 1524.8669769843.

The spelling of 3545650121 in words is "three billion, five hundred forty-five million, six hundred fifty thousand, one hundred twenty-one".