54156109 has 4 divisors (see below), whose sum is σ = 61892704. Its totient is φ = 46419516.

The previous prime is 54156103. The next prime is 54156133. The reversal of 54156109 is 90165145.

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 54156109 - 2⁹ = 54155597 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 (54156103) 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, 3868287 + ... + 3868300.

It is an arithmetic number, because the mean of its divisors is an integer number (15473176).

Almost surely, 2^54156109 is an apocalyptic number.

It is an amenable number.

54156109 is a deficient number, since it is larger than the sum of its proper divisors (7736595).

54156109 is an equidigital number, since it uses as much as digits as its factorization.

54156109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736594.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 54156109 is about 7359.0834347764. The cubic root of 54156109 is about 378.3401960541.

The spelling of 54156109 in words is "fifty-four million, one hundred fifty-six thousand, one hundred nine".