57740381 has 4 divisors (see below), whose sum is σ = 61136892. Its totient is φ = 54343872.

The previous prime is 57740377. The next prime is 57740407. The reversal of 57740381 is 18304775.

57740381 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.

It can be written as a sum of positive squares in 2 ways, for example, as 49928356 + 7812025 = 7066^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 57740381 - 2² = 57740377 is a prime.

It is a super-2 number, since 2×57740381² = 6667903196050322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57740311) 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, 1698230 + ... + 1698263.

It is an arithmetic number, because the mean of its divisors is an integer number (15284223).

Almost surely, 2^57740381 is an apocalyptic number.

It is an amenable number.

57740381 is a deficient number, since it is larger than the sum of its proper divisors (3396511).

57740381 is a wasteful number, since it uses less digits than its factorization.

57740381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396510.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57740381 is about 7598.7091666940. The cubic root of 57740381 is about 386.5092408926.

The spelling of 57740381 in words is "fifty-seven million, seven hundred forty thousand, three hundred eighty-one".