7145541 has 24 divisors (see below), whose sum is σ = 11214840. Its totient is φ = 4358016.

The previous prime is 7145533. The next prime is 7145557. The reversal of 7145541 is 1455417.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16641 + 7128900 = 129^2 + 2670^2 .

It is not a de Polignac number, because 7145541 - 2³ = 7145533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18175 + ... + 18563.

It is an arithmetic number, because the mean of its divisors is an integer number (467285).

Almost surely, 2^7145541 is an apocalyptic number.

It is an amenable number.

7145541 is a deficient number, since it is larger than the sum of its proper divisors (4069299).

7145541 is a wasteful number, since it uses less digits than its factorization.

7145541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 562 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 7145541 is about 2673.1144756632. The cubic root of 7145541 is about 192.6097962493.

The spelling of 7145541 in words is "seven million, one hundred forty-five thousand, five hundred forty-one".