3122545521 has 4 divisors (see below), whose sum is σ = 4163394032. Its totient is φ = 2081697012.

The previous prime is 3122545513. The next prime is 3122545529. The reversal of 3122545521 is 1255452213.

3122545521 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1255452213 = 3 ⋅418484071.

It is an interprime number because it is at equal distance from previous prime (3122545513) and next prime (3122545529).

It is not a de Polignac number, because 3122545521 - 2³ = 3122545513 is a prime.

It is a super-2 number, since 2×3122545521² = 19500581061434322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3122545529) 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, 520424251 + ... + 520424256.

It is an arithmetic number, because the mean of its divisors is an integer number (1040848508).

Almost surely, 2^3122545521 is an apocalyptic number.

It is an amenable number.

3122545521 is a deficient number, since it is larger than the sum of its proper divisors (1040848511).

3122545521 is a wasteful number, since it uses less digits than its factorization.

3122545521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040848510.

The product of its digits is 12000, while the sum is 30.

The square root of 3122545521 is about 55879.7415974698. The cubic root of 3122545521 is about 1461.6259987087.

Adding to 3122545521 its reverse (1255452213), we get a palindrome (4377997734).

The spelling of 3122545521 in words is "three billion, one hundred twenty-two million, five hundred forty-five thousand, five hundred twenty-one".