57782783 has 2 divisors, whose sum is σ = 57782784. Its totient is φ = 57782782.

The previous prime is 57782759. The next prime is 57782821. The reversal of 57782783 is 38728775.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57782783 - 2¹⁴ = 57766399 is a prime.

It is a super-2 number, since 2×57782783² = 6677700022450178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57782713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28891391 + 28891392.

It is an arithmetic number, because the mean of its divisors is an integer number (28891392).

Almost surely, 2^57782783 is an apocalyptic number.

57782783 is a deficient number, since it is larger than the sum of its proper divisors (1).

57782783 is an equidigital number, since it uses as much as digits as its factorization.

57782783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 47.

The square root of 57782783 is about 7601.4987338024. The cubic root of 57782783 is about 386.6038295465.

The spelling of 57782783 in words is "fifty-seven million, seven hundred eighty-two thousand, seven hundred eighty-three".