2481649 has 2 divisors, whose sum is σ = 2481650. Its totient is φ = 2481648.

The previous prime is 2481641. The next prime is 2481653. The reversal of 2481649 is 9461842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 1024 = 1575^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 2481649 - 2³ = 2481641 is a prime.

2481649 is a lucky number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2481641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240824 + 1240825.

It is an arithmetic number, because the mean of its divisors is an integer number (1240825).

2^2481649 is an apocalyptic number.

It is an amenable number.

2481649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2481649 is an equidigital number, since it uses as much as digits as its factorization.

2481649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 2481649 is about 1575.3250458239. The cubic root of 2481649 is about 135.3879831108.

The spelling of 2481649 in words is "two million, four hundred eighty-one thousand, six hundred forty-nine".