55280332 has 6 divisors (see below), whose sum is σ = 96740588. Its totient is φ = 27640164.

The previous prime is 55280317. The next prime is 55280333. The reversal of 55280332 is 23308255.

It is a self number, because there is not a number n which added to its sum of digits gives 55280332.

It is not an unprimeable number, because it can be changed into a prime (55280333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910038 + ... + 6910045.

Almost surely, 2^55280332 is an apocalyptic number.

It is an amenable number.

55280332 is a deficient number, since it is larger than the sum of its proper divisors (41460256).

55280332 is a wasteful number, since it uses less digits than its factorization.

55280332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820087 (or 13820085 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 55280332 is about 7435.0744448190. The cubic root of 55280332 is about 380.9402661455.

Adding to 55280332 its reverse (23308255), we get a palindrome (78588587).

The spelling of 55280332 in words is "fifty-five million, two hundred eighty thousand, three hundred thirty-two".