57274909 has 4 divisors (see below), whose sum is σ = 58671900. Its totient is φ = 55877920.

The previous prime is 57274907. The next prime is 57274951. The reversal of 57274909 is 90947275.

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 13118884 + 44156025 = 3622^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 57274909 - 2¹ = 57274907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57274907) 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, 698434 + ... + 698515.

It is an arithmetic number, because the mean of its divisors is an integer number (14667975).

Almost surely, 2^57274909 is an apocalyptic number.

It is an amenable number.

57274909 is a deficient number, since it is larger than the sum of its proper divisors (1396991).

57274909 is a wasteful number, since it uses less digits than its factorization.

57274909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396990.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 57274909 is about 7568.0188292578. The cubic root of 57274909 is about 385.4678273155.

The spelling of 57274909 in words is "fifty-seven million, two hundred seventy-four thousand, nine hundred nine".