55132685 has 4 divisors (see below), whose sum is σ = 66159228. Its totient is φ = 44106144.

The previous prime is 55132681. The next prime is 55132687. The reversal of 55132685 is 58623155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23164969 + 31967716 = 4813^2 + 5654^2 .

It is a cyclic number.

It is not a de Polignac number, because 55132685 - 2² = 55132681 is a prime.

It is a super-2 number, since 2×55132685² = 6079225910618450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55132681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5513264 + ... + 5513273.

It is an arithmetic number, because the mean of its divisors is an integer number (16539807).

Almost surely, 2^55132685 is an apocalyptic number.

It is an amenable number.

55132685 is a deficient number, since it is larger than the sum of its proper divisors (11026543).

55132685 is a wasteful number, since it uses less digits than its factorization.

55132685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026542.

The product of its digits is 36000, while the sum is 35.

The square root of 55132685 is about 7425.1387192429. The cubic root of 55132685 is about 380.6008154819.

The spelling of 55132685 in words is "fifty-five million, one hundred thirty-two thousand, six hundred eighty-five".