45082121 has 4 divisors (see below), whose sum is σ = 51522432. Its totient is φ = 38641812.

The previous prime is 45082109. The next prime is 45082123. The reversal of 45082121 is 12128054.

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: 12128054 = 2 ⋅6064027.

It is a cyclic number.

It is not a de Polignac number, because 45082121 - 2¹⁰ = 45081097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45082123) 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, 3220145 + ... + 3220158.

It is an arithmetic number, because the mean of its divisors is an integer number (12880608).

Almost surely, 2^45082121 is an apocalyptic number.

It is an amenable number.

45082121 is a deficient number, since it is larger than the sum of its proper divisors (6440311).

45082121 is an equidigital number, since it uses as much as digits as its factorization.

45082121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440310.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 45082121 is about 6714.3220804486. The cubic root of 45082121 is about 355.9055661024.

The spelling of 45082121 in words is "forty-five million, eighty-two thousand, one hundred twenty-one".