54158709 has 16 divisors (see below), whose sum is σ = 79349760. Its totient is φ = 32584560.

The previous prime is 54158707. The next prime is 54158723. The reversal of 54158709 is 90785145.

It is not a de Polignac number, because 54158709 - 2¹ = 54158707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54158701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (4959360).

Almost surely, 2^54158709 is an apocalyptic number.

It is an amenable number.

54158709 is a deficient number, since it is larger than the sum of its proper divisors (25191051).

54158709 is a wasteful number, since it uses less digits than its factorization.

54158709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11960.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 54158709 is about 7359.2600850901. The cubic root of 54158709 is about 378.3462505805.

The spelling of 54158709 in words is "fifty-four million, one hundred fifty-eight thousand, seven hundred nine".