57878477 has 2 divisors, whose sum is σ = 57878478. Its totient is φ = 57878476.

The previous prime is 57878467. The next prime is 57878497. The reversal of 57878477 is 77487875.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34703881 + 23174596 = 5891^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 57878477 - 2¹⁸ = 57616333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57878407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28939238 + 28939239.

It is an arithmetic number, because the mean of its divisors is an integer number (28939239).

Almost surely, 2^57878477 is an apocalyptic number.

It is an amenable number.

57878477 is a deficient number, since it is larger than the sum of its proper divisors (1).

57878477 is an equidigital number, since it uses as much as digits as its factorization.

57878477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3073280, while the sum is 53.

The square root of 57878477 is about 7607.7905465385. The cubic root of 57878477 is about 386.8171298924.

The spelling of 57878477 in words is "fifty-seven million, eight hundred seventy-eight thousand, four hundred seventy-seven".