171057541 has 4 divisors (see below), whose sum is σ = 171113932. Its totient is φ = 171001152.

The previous prime is 171057533. The next prime is 171057547. The reversal of 171057541 is 145750171.

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 131102500 + 39955041 = 11450^2 + 6321^2 .

It is a cyclic number.

It is not a de Polignac number, because 171057541 - 2³ = 171057533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171057547) 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, 23370 + ... + 29803.

It is an arithmetic number, because the mean of its divisors is an integer number (42778483).

Almost surely, 2^171057541 is an apocalyptic number.

It is an amenable number.

171057541 is a deficient number, since it is larger than the sum of its proper divisors (56391).

171057541 is an equidigital number, since it uses as much as digits as its factorization.

171057541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56390.

The product of its (nonzero) digits is 4900, while the sum is 31.

The square root of 171057541 is about 13078.8967806922. The cubic root of 171057541 is about 555.1121608666.

The spelling of 171057541 in words is "one hundred seventy-one million, fifty-seven thousand, five hundred forty-one".