54171557 has 4 divisors (see below), whose sum is σ = 59096256. Its totient is φ = 49246860.

The previous prime is 54171521. The next prime is 54171563. The reversal of 54171557 is 75517145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54171557 - 2⁸ = 54171301 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 (54171517) 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, 2462333 + ... + 2462354.

It is an arithmetic number, because the mean of its divisors is an integer number (14774064).

Almost surely, 2^54171557 is an apocalyptic number.

It is an amenable number.

54171557 is a deficient number, since it is larger than the sum of its proper divisors (4924699).

54171557 is a wasteful number, since it uses less digits than its factorization.

54171557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924698.

The product of its digits is 24500, while the sum is 35.

The square root of 54171557 is about 7360.1329471688. The cubic root of 54171557 is about 378.3761664111.

The spelling of 54171557 in words is "fifty-four million, one hundred seventy-one thousand, five hundred fifty-seven".