55273788 has 36 divisors (see below), whose sum is σ = 140114520. Its totient is φ = 18372576.

The previous prime is 55273787. The next prime is 55273811. The reversal of 55273788 is 88737255.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55273787) 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, 12031 + ... + 15977.

It is an arithmetic number, because the mean of its divisors is an integer number (3892070).

Almost surely, 2^55273788 is an apocalyptic number.

It is an amenable number.

55273788 is an abundant number, since it is smaller than the sum of its proper divisors (84840732).

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

55273788 is a wasteful number, since it uses less digits than its factorization.

55273788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346 (or 4341 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 55273788 is about 7434.6343555013. The cubic root of 55273788 is about 380.9252338463.

The spelling of 55273788 in words is "fifty-five million, two hundred seventy-three thousand, seven hundred eighty-eight".