54175391 has 4 divisors (see below), whose sum is σ = 55496784. Its totient is φ = 52854000.

The previous prime is 54175367. The next prime is 54175409. The reversal of 54175391 is 19357145.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54175391 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 (54175361) 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, 660635 + ... + 660716.

It is an arithmetic number, because the mean of its divisors is an integer number (13874196).

Almost surely, 2^54175391 is an apocalyptic number.

54175391 is a deficient number, since it is larger than the sum of its proper divisors (1321393).

54175391 is a wasteful number, since it uses less digits than its factorization.

54175391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321392.

The product of its digits is 18900, while the sum is 35.

The square root of 54175391 is about 7360.3933998123. The cubic root of 54175391 is about 378.3850927436.

The spelling of 54175391 in words is "fifty-four million, one hundred seventy-five thousand, three hundred ninety-one".