54171902 has 4 divisors (see below), whose sum is σ = 81257856. Its totient is φ = 27085950.

The previous prime is 54171899. The next prime is 54171919. The reversal of 54171902 is 20917145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20917145 = 5 ⋅4183429.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13542974 + ... + 13542977.

It is an arithmetic number, because the mean of its divisors is an integer number (20314464).

Almost surely, 2^54171902 is an apocalyptic number.

54171902 is a deficient number, since it is larger than the sum of its proper divisors (27085954).

54171902 is a wasteful number, since it uses less digits than its factorization.

54171902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27085953.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 54171902 is about 7360.1563842082. The cubic root of 54171902 is about 378.3769696586.

The spelling of 54171902 in words is "fifty-four million, one hundred seventy-one thousand, nine hundred two".