55311072 has 48 divisors (see below), whose sum is σ = 148579200. Its totient is φ = 18006912.

The previous prime is 55311043. The next prime is 55311077. The reversal of 55311072 is 27011355.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55311077) 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, 2572 + ... + 10827.

It is an arithmetic number, because the mean of its divisors is an integer number (3095400).

Almost surely, 2^55311072 is an apocalyptic number.

It is an amenable number.

55311072 is an abundant number, since it is smaller than the sum of its proper divisors (93268128).

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

55311072 is a wasteful number, since it uses less digits than its factorization.

55311072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455 (or 13447 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 55311072 is about 7437.1413863124. The cubic root of 55311072 is about 381.0108634898.

The spelling of 55311072 in words is "fifty-five million, three hundred eleven thousand, seventy-two".