7453945 has 4 divisors (see below), whose sum is σ = 8944740. Its totient is φ = 5963152.

The previous prime is 7453933. The next prime is 7453961. The reversal of 7453945 is 5493547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5493547 = 947 ⋅5801.

It can be written as a sum of positive squares in 2 ways, for example, as 1283689 + 6170256 = 1133^2 + 2484^2 .

It is a cyclic number.

It is not a de Polignac number, because 7453945 - 2¹⁷ = 7322873 is a prime.

It is a super-2 number, since 2×7453945² = 111122592126050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745390 + ... + 745399.

It is an arithmetic number, because the mean of its divisors is an integer number (2236185).

Almost surely, 2^7453945 is an apocalyptic number.

It is an amenable number.

7453945 is a deficient number, since it is larger than the sum of its proper divisors (1490795).

7453945 is a wasteful number, since it uses less digits than its factorization.

7453945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490794.

The product of its digits is 75600, while the sum is 37.

The square root of 7453945 is about 2730.1913852329. The cubic root of 7453945 is about 195.3418941787.

The spelling of 7453945 in words is "seven million, four hundred fifty-three thousand, nine hundred forty-five".