57093997 has 4 divisors (see below), whose sum is σ = 58637116. Its totient is φ = 55550880.

The previous prime is 57093989. The next prime is 57094001. The reversal of 57093997 is 79939075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29278921 + 27815076 = 5411^2 + 5274^2 .

It is a cyclic number.

It is not a de Polignac number, because 57093997 - 2³ = 57093989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57093997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57093947) 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 in 3 ways as a sum of consecutive naturals, for example, 771504 + ... + 771577.

It is an arithmetic number, because the mean of its divisors is an integer number (14659279).

Almost surely, 2^57093997 is an apocalyptic number.

It is an amenable number.

57093997 is a deficient number, since it is larger than the sum of its proper divisors (1543119).

57093997 is a wasteful number, since it uses less digits than its factorization.

57093997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543118.

The product of its (nonzero) digits is 535815, while the sum is 49.

The square root of 57093997 is about 7556.0569743749. The cubic root of 57093997 is about 385.0615452293.

The spelling of 57093997 in words is "fifty-seven million, ninety-three thousand, nine hundred ninety-seven".