54695309 has 4 divisors (see below), whose sum is σ = 54718716. Its totient is φ = 54671904.

The previous prime is 54695233. The next prime is 54695327. The reversal of 54695309 is 90359645.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90359645 = 5 ⋅18071929.

It can be written as a sum of positive squares in 2 ways, for example, as 31866025 + 22829284 = 5645^2 + 4778^2 .

It is a cyclic number.

It is not a de Polignac number, because 54695309 - 2¹² = 54691213 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 (54695359) 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, 7754 + ... + 13019.

It is an arithmetic number, because the mean of its divisors is an integer number (13679679).

Almost surely, 2^54695309 is an apocalyptic number.

It is an amenable number.

54695309 is a deficient number, since it is larger than the sum of its proper divisors (23407).

54695309 is a wasteful number, since it uses less digits than its factorization.

54695309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23406.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 54695309 is about 7395.6276947937. The cubic root of 54695309 is about 379.5916874614.

The spelling of 54695309 in words is "fifty-four million, six hundred ninety-five thousand, three hundred nine".