55361503 has 8 divisors (see below), whose sum is σ = 58723920. Its totient is φ = 52010880.

The previous prime is 55361491. The next prime is 55361507. The reversal of 55361503 is 30516355.

It is a happy number.

55361503 is a nontrivial binomial coefficient, being equal to C(10523, 2).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55361503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55361507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7893 + ... + 13153.

It is an arithmetic number, because the mean of its divisors is an integer number (7340490).

Almost surely, 2^55361503 is an apocalyptic number.

55361503 is the 10522-nd triangular number.

55361503 is the 3508-th centered nonagonal number.

55361503 is a deficient number, since it is larger than the sum of its proper divisors (3362417).

55361503 is a wasteful number, since it uses less digits than its factorization.

55361503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 55361503 is about 7440.5310966355. The cubic root of 55361503 is about 381.1266264603.

Adding to 55361503 its reverse (30516355), we get a palindrome (85877858).

The spelling of 55361503 in words is "fifty-five million, three hundred sixty-one thousand, five hundred three".