54172511 has 4 divisors (see below), whose sum is σ = 54200952. Its totient is φ = 54144072.

The previous prime is 54172501. The next prime is 54172513. The reversal of 54172511 is 11527145.

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-54172511 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 (54172513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11141 + ... + 15246.

It is an arithmetic number, because the mean of its divisors is an integer number (13550238).

Almost surely, 2^54172511 is an apocalyptic number.

54172511 is a deficient number, since it is larger than the sum of its proper divisors (28441).

54172511 is a wasteful number, since it uses less digits than its factorization.

54172511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28440.

The product of its digits is 1400, while the sum is 26.

The square root of 54172511 is about 7360.1977554954. The cubic root of 54172511 is about 378.3783875567.

Adding to 54172511 its reverse (11527145), we get a palindrome (65699656).

The spelling of 54172511 in words is "fifty-four million, one hundred seventy-two thousand, five hundred eleven".