54195309 has 24 divisors (see below), whose sum is σ = 91158912. Its totient is φ = 30382560.

The previous prime is 54195299. The next prime is 54195319. The reversal of 54195309 is 90359145.

It is an interprime number because it is at equal distance from previous prime (54195299) and next prime (54195319).

It is not a de Polignac number, because 54195309 - 2¹² = 54191213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54195319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4777 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (3798288).

Almost surely, 2^54195309 is an apocalyptic number.

It is an amenable number.

54195309 is a deficient number, since it is larger than the sum of its proper divisors (36963603).

54195309 is a wasteful number, since it uses less digits than its factorization.

54195309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16297 (or 16294 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 54195309 is about 7361.7463281480. The cubic root of 54195309 is about 378.4314591269.

The spelling of 54195309 in words is "fifty-four million, one hundred ninety-five thousand, three hundred nine".