57477649 has 4 divisors (see below), whose sum is σ = 57493540. Its totient is φ = 57461760.

The previous prime is 57477647. The next prime is 57477653. The reversal of 57477649 is 94677475.

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 20657025 + 36820624 = 4545^2 + 6068^2 .

It is a cyclic number.

It is not a de Polignac number, because 57477649 - 2¹ = 57477647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57477643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 10729.

It is an arithmetic number, because the mean of its divisors is an integer number (14373385).

Almost surely, 2^57477649 is an apocalyptic number.

It is an amenable number.

57477649 is a deficient number, since it is larger than the sum of its proper divisors (15891).

57477649 is a wasteful number, since it uses less digits than its factorization.

57477649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890.

The product of its digits is 1481760, while the sum is 49.

The square root of 57477649 is about 7581.4015195081. The cubic root of 57477649 is about 385.9221141861.

The spelling of 57477649 in words is "fifty-seven million, four hundred seventy-seven thousand, six hundred forty-nine".