55309326 has 32 divisors (see below), whose sum is σ = 112879008. Its totient is φ = 18063360.

The previous prime is 55309297. The next prime is 55309327. The reversal of 55309326 is 62390355.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55309327) 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, 85966 + ... + 86606.

It is an arithmetic number, because the mean of its divisors is an integer number (3527469).

Almost surely, 2^55309326 is an apocalyptic number.

55309326 is an abundant number, since it is smaller than the sum of its proper divisors (57569682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55309326 is a wasteful number, since it uses less digits than its factorization.

55309326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 55309326 is about 7437.0240015748. The cubic root of 55309326 is about 381.0068543348.

The spelling of 55309326 in words is "fifty-five million, three hundred nine thousand, three hundred twenty-six".