2547481 has 4 divisors (see below), whose sum is σ = 2582452. Its totient is φ = 2512512.

The previous prime is 2547473. The next prime is 2547491. The reversal of 2547481 is 1847452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 632025 + 1915456 = 795^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 2547481 - 2³ = 2547473 is a prime.

It is a super-2 number, since 2×2547481² = 12979318890722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2547431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17376 + ... + 17521.

It is an arithmetic number, because the mean of its divisors is an integer number (645613).

2^2547481 is an apocalyptic number.

It is an amenable number.

2547481 is a deficient number, since it is larger than the sum of its proper divisors (34971).

2547481 is an equidigital number, since it uses as much as digits as its factorization.

2547481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34970.

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

The square root of 2547481 is about 1596.0830178910. The cubic root of 2547481 is about 136.5747196989.

The spelling of 2547481 in words is "two million, five hundred forty-seven thousand, four hundred eighty-one".