57930421 has 2 divisors, whose sum is σ = 57930422. Its totient is φ = 57930420.

The previous prime is 57930409. The next prime is 57930451. The reversal of 57930421 is 12403975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 21762225 = 6014^2 + 4665^2 .

It is a cyclic number.

It is not a de Polignac number, because 57930421 - 2¹¹ = 57928373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57930401) 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, 28965210 + 28965211.

It is an arithmetic number, because the mean of its divisors is an integer number (28965211).

Almost surely, 2^57930421 is an apocalyptic number.

It is an amenable number.

57930421 is a deficient number, since it is larger than the sum of its proper divisors (1).

57930421 is an equidigital number, since it uses as much as digits as its factorization.

57930421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57930421 is about 7611.2036498835. The cubic root of 57930421 is about 386.9328137767.

The spelling of 57930421 in words is "fifty-seven million, nine hundred thirty thousand, four hundred twenty-one".