55503733 has 4 divisors (see below), whose sum is σ = 57294208. Its totient is φ = 53713260.

The previous prime is 55503703. The next prime is 55503751. The reversal of 55503733 is 33730555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55503733 - 2¹³ = 55495541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1790443 = 55503733 / (5 + 5 + 5 + 0 + 3 + 7 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55503695 and 55503704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 895191 + ... + 895252.

It is an arithmetic number, because the mean of its divisors is an integer number (14323552).

Almost surely, 2^55503733 is an apocalyptic number.

It is an amenable number.

55503733 is a deficient number, since it is larger than the sum of its proper divisors (1790475).

55503733 is a wasteful number, since it uses less digits than its factorization.

55503733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790474.

The product of its (nonzero) digits is 23625, while the sum is 31.

The square root of 55503733 is about 7450.0827512183. The cubic root of 55503733 is about 381.4527332398.

The spelling of 55503733 in words is "fifty-five million, five hundred three thousand, seven hundred thirty-three".