57961091 has 4 divisors (see below), whose sum is σ = 57976632. Its totient is φ = 57945552.

The previous prime is 57961049. The next prime is 57961121. The reversal of 57961091 is 19016975.

57961091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57961091 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (57961021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 10878.

It is an arithmetic number, because the mean of its divisors is an integer number (14494158).

Almost surely, 2^57961091 is an apocalyptic number.

57961091 is a deficient number, since it is larger than the sum of its proper divisors (15541).

57961091 is an equidigital number, since it uses as much as digits as its factorization.

57961091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 57961091 is about 7613.2181763036. The cubic root of 57961091 is about 387.0010861140.

The spelling of 57961091 in words is "fifty-seven million, nine hundred sixty-one thousand, ninety-one".