55722312 has 48 divisors (see below), whose sum is σ = 151341840. Its totient is φ = 18521568.

The previous prime is 55722263. The next prime is 55722319. The reversal of 55722312 is 21322755.

It is a super-3 number, since 3×55722312³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55722319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31023 + ... + 32769.

It is an arithmetic number, because the mean of its divisors is an integer number (3152955).

Almost surely, 2^55722312 is an apocalyptic number.

It is an amenable number.

55722312 is an abundant number, since it is smaller than the sum of its proper divisors (95619528).

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

55722312 is a wasteful number, since it uses less digits than its factorization.

55722312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202 (or 2195 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 55722312 is about 7464.7379056468. The cubic root of 55722312 is about 381.9528097915.

The spelling of 55722312 in words is "fifty-five million, seven hundred twenty-two thousand, three hundred twelve".