55276520 has 128 divisors (see below), whose sum is σ = 146512800. Its totient is φ = 18690048.

The previous prime is 55276493. The next prime is 55276531. The reversal of 55276520 is 2567255.

It can be written as a sum of positive squares in 16 ways, for example, as 4268356 + 51008164 = 2066^2 + 7142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1493942 + ... + 1493978.

Almost surely, 2^55276520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55276520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73256400).

55276520 is an abundant number, since it is smaller than the sum of its proper divisors (91236280).

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

55276520 is a wasteful number, since it uses less digits than its factorization.

55276520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 55276520 is about 7434.8180878889. The cubic root of 55276520 is about 380.9315096998.

The spelling of 55276520 in words is "fifty-five million, two hundred seventy-six thousand, five hundred twenty".