57982091 has 4 divisors (see below), whose sum is σ = 61033800. Its totient is φ = 54930384.

The previous prime is 57982081. The next prime is 57982097. The reversal of 57982091 is 19028975.

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

It is a cyclic number.

It is not a de Polignac number, because 57982091 - 2¹⁴ = 57965707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57982097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525826 + ... + 1525863.

It is an arithmetic number, because the mean of its divisors is an integer number (15258450).

Almost surely, 2^57982091 is an apocalyptic number.

57982091 is a deficient number, since it is larger than the sum of its proper divisors (3051709).

57982091 is a wasteful number, since it uses less digits than its factorization.

57982091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051708.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 57982091 is about 7614.5972316335. The cubic root of 57982091 is about 387.0478188524.

The spelling of 57982091 in words is "fifty-seven million, nine hundred eighty-two thousand, ninety-one".