57878533 has 2 divisors, whose sum is σ = 57878534. Its totient is φ = 57878532.

The previous prime is 57878531. The next prime is 57878537. The reversal of 57878533 is 33587875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50027329 + 7851204 = 7073^2 + 2802^2 .

It is a cyclic number.

It is not a de Polignac number, because 57878533 - 2¹ = 57878531 is a prime.

Together with 57878531, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57878531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28939266 + 28939267.

It is an arithmetic number, because the mean of its divisors is an integer number (28939267).

Almost surely, 2^57878533 is an apocalyptic number.

It is an amenable number.

57878533 is a deficient number, since it is larger than the sum of its proper divisors (1).

57878533 is an equidigital number, since it uses as much as digits as its factorization.

57878533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 57878533 is about 7607.7942269754. The cubic root of 57878533 is about 386.8172546466.

The spelling of 57878533 in words is "fifty-seven million, eight hundred seventy-eight thousand, five hundred thirty-three".