2478541 has 4 divisors (see below), whose sum is σ = 2669212. Its totient is φ = 2287872.

The previous prime is 2478529. The next prime is 2478547. The reversal of 2478541 is 1458742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1458742 = 2 ⋅729371.

It can be written as a sum of positive squares in 2 ways, for example, as 137641 + 2340900 = 371^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478541 - 2⁹ = 2478029 is a prime.

It is a super-2 number, since 2×2478541² = 12286330977362, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 4² + 7³ + 8³ + 5⁹ + 4⁴ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478547) 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, 95316 + ... + 95341.

It is an arithmetic number, because the mean of its divisors is an integer number (667303).

2^2478541 is an apocalyptic number.

It is an amenable number.

2478541 is a deficient number, since it is larger than the sum of its proper divisors (190671).

2478541 is a wasteful number, since it uses less digits than its factorization.

2478541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190670.

The product of its digits is 8960, while the sum is 31.

The square root of 2478541 is about 1574.3382736883. The cubic root of 2478541 is about 135.3314398424.

The spelling of 2478541 in words is "two million, four hundred seventy-eight thousand, five hundred forty-one".