55003553 has 8 divisors (see below), whose sum is σ = 60129216. Its totient is φ = 49898800.

The previous prime is 55003549. The next prime is 55003561. The reversal of 55003553 is 35530055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55003553 - 2² = 55003549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55003153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563 + ... + 10503.

It is an arithmetic number, because the mean of its divisors is an integer number (7516152).

Almost surely, 2^55003553 is an apocalyptic number.

It is an amenable number.

55003553 is a deficient number, since it is larger than the sum of its proper divisors (5125663).

55003553 is a wasteful number, since it uses less digits than its factorization.

55003553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10455.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 55003553 is about 7416.4380264383. The cubic root of 55003553 is about 380.3034349241.

The spelling of 55003553 in words is "fifty-five million, three thousand, five hundred fifty-three".