53782649 has 4 divisors (see below), whose sum is σ = 53808036. Its totient is φ = 53757264.

The previous prime is 53782643. The next prime is 53782657. The reversal of 53782649 is 94628735.

53782649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94628735 = 5 ⋅18925747.

It can be written as a sum of positive squares in 2 ways, for example, as 30085225 + 23697424 = 5485^2 + 4868^2 .

It is a cyclic number.

It is not a de Polignac number, because 53782649 - 2⁴ = 53782633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53782643) 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, 9194 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (13452009).

Almost surely, 2^53782649 is an apocalyptic number.

It is an amenable number.

53782649 is a deficient number, since it is larger than the sum of its proper divisors (25387).

53782649 is a wasteful number, since it uses less digits than its factorization.

53782649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25386.

The product of its digits is 362880, while the sum is 44.

The square root of 53782649 is about 7333.6654546004. The cubic root of 53782649 is about 377.4685124973.

The spelling of 53782649 in words is "fifty-three million, seven hundred eighty-two thousand, six hundred forty-nine".