57261641 has 4 divisors (see below), whose sum is σ = 57281172. Its totient is φ = 57242112.

The previous prime is 57261637. The next prime is 57261691. The reversal of 57261641 is 14616275.

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 29214025 + 28047616 = 5405^2 + 5296^2 .

It is a cyclic number.

It is not a de Polignac number, because 57261641 - 2² = 57261637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57261598 and 57261607.

It is not an unprimeable number, because it can be changed into a prime (57261691) 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, 4376 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (14320293).

Almost surely, 2^57261641 is an apocalyptic number.

It is an amenable number.

57261641 is a deficient number, since it is larger than the sum of its proper divisors (19531).

57261641 is a wasteful number, since it uses less digits than its factorization.

57261641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19530.

The product of its digits is 10080, while the sum is 32.

The square root of 57261641 is about 7567.1421950430. The cubic root of 57261641 is about 385.4380598764.

The spelling of 57261641 in words is "fifty-seven million, two hundred sixty-one thousand, six hundred forty-one".