57006445 has 4 divisors (see below), whose sum is σ = 68407740. Its totient is φ = 45605152.

The previous prime is 57006419. The next prime is 57006461. The reversal of 57006445 is 54460075.

It is a happy number.

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 19527561 + 37478884 = 4419^2 + 6122^2 .

It is a cyclic number.

It is not a de Polignac number, because 57006445 - 2⁵ = 57006413 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5700640 + ... + 5700649.

It is an arithmetic number, because the mean of its divisors is an integer number (17101935).

Almost surely, 2^57006445 is an apocalyptic number.

It is an amenable number.

57006445 is a deficient number, since it is larger than the sum of its proper divisors (11401295).

57006445 is a wasteful number, since it uses less digits than its factorization.

57006445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401294.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 57006445 is about 7550.2612537580. The cubic root of 57006445 is about 384.8646176043.

The spelling of 57006445 in words is "fifty-seven million, six thousand, four hundred forty-five".