2478547 has 2 divisors, whose sum is σ = 2478548. Its totient is φ = 2478546.

The previous prime is 2478529. The next prime is 2478557. The reversal of 2478547 is 7458742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478547 is a prime.

It is a super-2 number, since 2×2478547² = 12286390462418, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁹ + 4 + 7² + 8 + 5⁹ + 4⁵ + 7² .

It is not a weakly prime, because it can be changed into another prime (2478517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239273 + 1239274.

It is an arithmetic number, because the mean of its divisors is an integer number (1239274).

2^2478547 is an apocalyptic number.

2478547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478547 is an equidigital number, since it uses as much as digits as its factorization.

2478547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62720, while the sum is 37.

The square root of 2478547 is about 1574.3401792497. The cubic root of 2478547 is about 135.3315490448.

It can be divided in two parts, 2478 and 547, that added together give a square (3025 = 55²).

The spelling of 2478547 in words is "two million, four hundred seventy-eight thousand, five hundred forty-seven".