57749305 has 8 divisors (see below), whose sum is σ = 69419592. Its totient is φ = 46119168.

The previous prime is 57749299. The next prime is 57749347. The reversal of 57749305 is 50394775.

It can be written as a sum of positive squares in 4 ways, for example, as 12752041 + 44997264 = 3571^2 + 6708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57749305 - 2⁷ = 57749177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6774 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (8677449).

Almost surely, 2^57749305 is an apocalyptic number.

It is an amenable number.

57749305 is a deficient number, since it is larger than the sum of its proper divisors (11670287).

57749305 is a wasteful number, since it uses less digits than its factorization.

57749305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20075.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 57749305 is about 7599.2963490050. The cubic root of 57749305 is about 386.5291520347.

The spelling of 57749305 in words is "fifty-seven million, seven hundred forty-nine thousand, three hundred five".