57291445 has 8 divisors (see below), whose sum is σ = 72793944. Its totient is φ = 43137024.

The previous prime is 57291427. The next prime is 57291457. The reversal of 57291445 is 54419275.

It can be written as a sum of positive squares in 4 ways, for example, as 19061956 + 38229489 = 4366^2 + 6183^2 .

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

It is not a de Polignac number, because 57291445 - 2²⁵ = 23737013 is a prime.

It is a Duffinian number.

It is a congruent 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, 336924 + ... + 337093.

It is an arithmetic number, because the mean of its divisors is an integer number (9099243).

Almost surely, 2^57291445 is an apocalyptic number.

It is an amenable number.

57291445 is a deficient number, since it is larger than the sum of its proper divisors (15502499).

57291445 is a wasteful number, since it uses less digits than its factorization.

57291445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674039.

The product of its digits is 50400, while the sum is 37.

The square root of 57291445 is about 7569.1112424115. Note that the first 3 decimals coincide. The cubic root of 57291445 is about 385.5049202461.

The spelling of 57291445 in words is "fifty-seven million, two hundred ninety-one thousand, four hundred forty-five".