57400477 has 2 divisors, whose sum is σ = 57400478. Its totient is φ = 57400476.

The previous prime is 57400457. The next prime is 57400487. The reversal of 57400477 is 77400475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57062916 + 337561 = 7554^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 57400477 - 2¹⁹ = 56876189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57400457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28700238 + 28700239.

It is an arithmetic number, because the mean of its divisors is an integer number (28700239).

Almost surely, 2^57400477 is an apocalyptic number.

It is an amenable number.

57400477 is a deficient number, since it is larger than the sum of its proper divisors (1).

57400477 is an equidigital number, since it uses as much as digits as its factorization.

57400477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 57400477 is about 7576.3102497192. The cubic root of 57400477 is about 385.7493182042.

The spelling of 57400477 in words is "fifty-seven million, four hundred thousand, four hundred seventy-seven".