55321734 has 64 divisors (see below), whose sum is σ = 126786240. Its totient is φ = 15966720.

The previous prime is 55321691. The next prime is 55321753. The reversal of 55321734 is 43712355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83364 + ... + 84024.

It is an arithmetic number, because the mean of its divisors is an integer number (1981035).

Almost surely, 2^55321734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55321734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63393120).

55321734 is an abundant number, since it is smaller than the sum of its proper divisors (71464506).

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

55321734 is a wasteful number, since it uses less digits than its factorization.

55321734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745.

The product of its digits is 12600, while the sum is 30.

The square root of 55321734 is about 7437.8581594435. The cubic root of 55321734 is about 381.0353436808.

The spelling of 55321734 in words is "fifty-five million, three hundred twenty-one thousand, seven hundred thirty-four".