55003651 has 4 divisors (see below), whose sum is σ = 57898600. Its totient is φ = 52108704.

The previous prime is 55003643. The next prime is 55003667. The reversal of 55003651 is 15630055.

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

It is a cyclic number.

It is not a de Polignac number, because 55003651 - 2³ = 55003643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55003631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447446 + ... + 1447483.

It is an arithmetic number, because the mean of its divisors is an integer number (14474650).

Almost surely, 2^55003651 is an apocalyptic number.

55003651 is a deficient number, since it is larger than the sum of its proper divisors (2894949).

55003651 is a wasteful number, since it uses less digits than its factorization.

55003651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894948.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 55003651 is about 7416.4446333806. Note that the first 3 decimals coincide. The cubic root of 55003651 is about 380.3036607866.

It can be divided in two parts, 55003 and 651, that multiplied together give a triangular number (35806953 = T₈₄₆₂).

The spelling of 55003651 in words is "fifty-five million, three thousand, six hundred fifty-one".