54193915 has 4 divisors (see below), whose sum is σ = 65032704. Its totient is φ = 43355128.

The previous prime is 54193913. The next prime is 54193933. The reversal of 54193915 is 51939145.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54193915 - 2¹ = 54193913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54193913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5419387 + ... + 5419396.

It is an arithmetic number, because the mean of its divisors is an integer number (16258176).

Almost surely, 2^54193915 is an apocalyptic number.

54193915 is a deficient number, since it is larger than the sum of its proper divisors (10838789).

54193915 is a wasteful number, since it uses less digits than its factorization.

54193915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838788.

The product of its digits is 24300, while the sum is 37.

The square root of 54193915 is about 7361.6516489168. The cubic root of 54193915 is about 378.4282144551.

The spelling of 54193915 in words is "fifty-four million, one hundred ninety-three thousand, nine hundred fifteen".