57784997 has 2 divisors, whose sum is σ = 57784998. Its totient is φ = 57784996.

The previous prime is 57784981. The next prime is 57785003. The reversal of 57784997 is 79948775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56460196 + 1324801 = 7514^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 57784997 - 2⁴ = 57784981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57784927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28892498 + 28892499.

It is an arithmetic number, because the mean of its divisors is an integer number (28892499).

Almost surely, 2^57784997 is an apocalyptic number.

It is an amenable number.

57784997 is a deficient number, since it is larger than the sum of its proper divisors (1).

57784997 is an equidigital number, since it uses as much as digits as its factorization.

57784997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 56.

The square root of 57784997 is about 7601.6443615839. The cubic root of 57784997 is about 386.6087671761.

The spelling of 57784997 in words is "fifty-seven million, seven hundred eighty-four thousand, nine hundred ninety-seven".