57447445 has 16 divisors (see below), whose sum is σ = 78475392. Its totient is φ = 39962560.

The previous prime is 57447443. The next prime is 57447451. The reversal of 57447445 is 54474475.

It is not a de Polignac number, because 57447445 - 2¹ = 57447443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57447398 and 57447407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57447443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21442 + ... + 23971.

It is an arithmetic number, because the mean of its divisors is an integer number (4904712).

Almost surely, 2^57447445 is an apocalyptic number.

57447445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57447445 is a deficient number, since it is larger than the sum of its proper divisors (21027947).

57447445 is a wasteful number, since it uses less digits than its factorization.

57447445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45452.

The product of its digits is 313600, while the sum is 40.

The square root of 57447445 is about 7579.4092777736. The cubic root of 57447445 is about 385.8545027805.

The spelling of 57447445 in words is "fifty-seven million, four hundred forty-seven thousand, four hundred forty-five".