55308276 has 36 divisors (see below), whose sum is σ = 148032612. Its totient is φ = 17351424.

The previous prime is 55308271. The next prime is 55308287. The reversal of 55308276 is 67280355.

It can be written as a sum of positive squares in 2 ways, for example, as 15920100 + 39388176 = 3990^2 + 6276^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55308276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55308271) 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, 44575 + ... + 45798.

It is an arithmetic number, because the mean of its divisors is an integer number (4112017).

Almost surely, 2^55308276 is an apocalyptic number.

It is an amenable number.

55308276 is an abundant number, since it is smaller than the sum of its proper divisors (92724336).

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

55308276 is a wasteful number, since it uses less digits than its factorization.

55308276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90400 (or 90395 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55308276 is about 7436.9534084866. The cubic root of 55308276 is about 381.0044432904.

The spelling of 55308276 in words is "fifty-five million, three hundred eight thousand, two hundred seventy-six".