55005628 has 6 divisors (see below), whose sum is σ = 96259856. Its totient is φ = 27502812.

The previous prime is 55005623. The next prime is 55005631. The reversal of 55005628 is 82650055.

It is a super-2 number, since 2×55005628² = 6051238223348768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55005628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6875700 + ... + 6875707.

Almost surely, 2^55005628 is an apocalyptic number.

It is an amenable number.

55005628 is a deficient number, since it is larger than the sum of its proper divisors (41254228).

55005628 is a wasteful number, since it uses less digits than its factorization.

55005628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13751411 (or 13751409 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 55005628 is about 7416.5779170720. The cubic root of 55005628 is about 380.3082171588.

The spelling of 55005628 in words is "fifty-five million, five thousand, six hundred twenty-eight".