3451521121 has 4 divisors (see below), whose sum is σ = 3562860544. Its totient is φ = 3340181700.

The previous prime is 3451521109. The next prime is 3451521167. The reversal of 3451521121 is 1211251543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3451521121 - 2¹⁹ = 3450996833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3451528121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55669665 + ... + 55669726.

It is an arithmetic number, because the mean of its divisors is an integer number (890715136).

Almost surely, 2^3451521121 is an apocalyptic number.

3451521121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3451521121 is a deficient number, since it is larger than the sum of its proper divisors (111339423).

3451521121 is a wasteful number, since it uses less digits than its factorization.

3451521121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111339422.

The product of its digits is 1200, while the sum is 25.

The square root of 3451521121 is about 58749.6478372424. The cubic root of 3451521121 is about 1511.2518485976.

Adding to 3451521121 its reverse (1211251543), we get a palindrome (4662772664).

The spelling of 3451521121 in words is "three billion, four hundred fifty-one million, five hundred twenty-one thousand, one hundred twenty-one".