57091201 has 4 divisors (see below), whose sum is σ = 57406804. Its totient is φ = 56775600.

The previous prime is 57091187. The next prime is 57091207. The reversal of 57091201 is 10219075.

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 22810176 + 34281025 = 4776^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 57091201 - 2²³ = 48702593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57091207) 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 in 3 ways as a sum of consecutive naturals, for example, 157530 + ... + 157891.

It is an arithmetic number, because the mean of its divisors is an integer number (14351701).

Almost surely, 2^57091201 is an apocalyptic number.

It is an amenable number.

57091201 is a deficient number, since it is larger than the sum of its proper divisors (315603).

57091201 is a wasteful number, since it uses less digits than its factorization.

57091201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315602.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 57091201 is about 7555.8719549765. The cubic root of 57091201 is about 385.0552593983.

The spelling of 57091201 in words is "fifty-seven million, ninety-one thousand, two hundred one".