45148121 has 4 divisors (see below), whose sum is σ = 46604544. Its totient is φ = 43691700.

The previous prime is 45148109. The next prime is 45148163. The reversal of 45148121 is 12184154.

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: 12184154 = 2 ⋅6092077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45148121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45148171) 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, 728165 + ... + 728226.

It is an arithmetic number, because the mean of its divisors is an integer number (11651136).

Almost surely, 2^45148121 is an apocalyptic number.

It is an amenable number.

45148121 is a deficient number, since it is larger than the sum of its proper divisors (1456423).

45148121 is a wasteful number, since it uses less digits than its factorization.

45148121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456422.

The product of its digits is 1280, while the sum is 26.

The square root of 45148121 is about 6719.2351499259. The cubic root of 45148121 is about 356.0791627389.

The spelling of 45148121 in words is "forty-five million, one hundred forty-eight thousand, one hundred twenty-one".