4161521255 has 4 divisors (see below), whose sum is σ = 4993825512. Its totient is φ = 3329217000.

The previous prime is 4161521249. The next prime is 4161521267. The reversal of 4161521255 is 5521251614.

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

It is a de Polignac number, because none of the positive numbers 2^k-4161521255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 416152121 + ... + 416152130.

It is an arithmetic number, because the mean of its divisors is an integer number (1248456378).

Almost surely, 2^4161521255 is an apocalyptic number.

4161521255 is a deficient number, since it is larger than the sum of its proper divisors (832304257).

4161521255 is an equidigital number, since it uses as much as digits as its factorization.

4161521255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832304256.

The product of its digits is 12000, while the sum is 32.

The square root of 4161521255 is about 64509.8539372087. The cubic root of 4161521255 is about 1608.4863227861.

Adding to 4161521255 its reverse (5521251614), we get a palindrome (9682772869).

The spelling of 4161521255 in words is "four billion, one hundred sixty-one million, five hundred twenty-one thousand, two hundred fifty-five".