2481557 has 4 divisors (see below), whose sum is σ = 2672460. Its totient is φ = 2290656.

The previous prime is 2481517. The next prime is 2481601. The reversal of 2481557 is 7551842.

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 152881 + 2328676 = 391^2 + 1526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2481557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2481517) 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, 95432 + ... + 95457.

It is an arithmetic number, because the mean of its divisors is an integer number (668115).

2^2481557 is an apocalyptic number.

It is an amenable number.

2481557 is a deficient number, since it is larger than the sum of its proper divisors (190903).

2481557 is a wasteful number, since it uses less digits than its factorization.

2481557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190902.

The product of its digits is 11200, while the sum is 32.

The square root of 2481557 is about 1575.2958452303. The cubic root of 2481557 is about 135.3863100501.

The spelling of 2481557 in words is "two million, four hundred eighty-one thousand, five hundred fifty-seven".