55132243 has 12 divisors (see below), whose sum is σ = 59206840. Its totient is φ = 51195456.

The previous prime is 55132237. The next prime is 55132271. The reversal of 55132243 is 34223155.

It is a de Polignac number, because none of the positive numbers 2^k-55132243 is a prime.

It is a super-2 number, since 2×55132243² = 6079128436422098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55132213) 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, 52855 + ... + 53887.

Almost surely, 2^55132243 is an apocalyptic number.

55132243 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55132243 is a deficient number, since it is larger than the sum of its proper divisors (4074597).

55132243 is a wasteful number, since it uses less digits than its factorization.

55132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1105 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 55132243 is about 7425.1089554295. The cubic root of 55132243 is about 380.5997983841.

Adding to 55132243 its reverse (34223155), we get a palindrome (89355398).

The spelling of 55132243 in words is "fifty-five million, one hundred thirty-two thousand, two hundred forty-three".