57391069 has 2 divisors, whose sum is σ = 57391070. Its totient is φ = 57391068.

The previous prime is 57390979. The next prime is 57391079. The reversal of 57391069 is 96019375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44156025 + 13235044 = 6645^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 57391069 - 2⁷ = 57390941 is a prime.

It is a super-2 number, since 2×57391069² = 6587469601925522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57391079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28695534 + 28695535.

It is an arithmetic number, because the mean of its divisors is an integer number (28695535).

Almost surely, 2^57391069 is an apocalyptic number.

It is an amenable number.

57391069 is a deficient number, since it is larger than the sum of its proper divisors (1).

57391069 is an equidigital number, since it uses as much as digits as its factorization.

57391069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 57391069 is about 7575.6893415715. The cubic root of 57391069 is about 385.7282421431.

The spelling of 57391069 in words is "fifty-seven million, three hundred ninety-one thousand, sixty-nine".