53782657 has 2 divisors, whose sum is σ = 53782658. Its totient is φ = 53782656.

The previous prime is 53782643. The next prime is 53782661. The reversal of 53782657 is 75628735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46362481 + 7420176 = 6809^2 + 2724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53782657 is a prime.

It is not a weakly prime, because it can be changed into another prime (53782607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26891328 + 26891329.

It is an arithmetic number, because the mean of its divisors is an integer number (26891329).

Almost surely, 2^53782657 is an apocalyptic number.

It is an amenable number.

53782657 is a deficient number, since it is larger than the sum of its proper divisors (1).

53782657 is an equidigital number, since it uses as much as digits as its factorization.

53782657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 53782657 is about 7333.6660000303. Note that the first 3 decimals coincide. The cubic root of 53782657 is about 377.4685312130.

The spelling of 53782657 in words is "fifty-three million, seven hundred eighty-two thousand, six hundred fifty-seven".