55319732 has 24 divisors (see below), whose sum is σ = 104546400. Its totient is φ = 25461216.

The previous prime is 55319731. The next prime is 55319753. The reversal of 55319732 is 23791355.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55319692 and 55319701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55319731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20519 + ... + 23057.

It is an arithmetic number, because the mean of its divisors is an integer number (4356100).

Almost surely, 2^55319732 is an apocalyptic number.

55319732 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55319732 is a deficient number, since it is larger than the sum of its proper divisors (49226668).

55319732 is a wasteful number, since it uses less digits than its factorization.

55319732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975 (or 2973 counting only the distinct ones).

The product of its digits is 28350, while the sum is 35.

The square root of 55319732 is about 7437.7235764715. The cubic root of 55319732 is about 381.0307472838.

The spelling of 55319732 in words is "fifty-five million, three hundred nineteen thousand, seven hundred thirty-two".