5533661503 has 4 divisors (see below), whose sum is σ = 5683219960. Its totient is φ = 5384103048.

The previous prime is 5533661489. The next prime is 5533661531. The reversal of 5533661503 is 3051663355.

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 5533661503 - 2¹³ = 5533653311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 149558419 = 5533661503 / (5 + 5 + 3 + 3 + 6 + 6 + 1 + 5 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5533601503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74779173 + ... + 74779246.

It is an arithmetic number, because the mean of its divisors is an integer number (1420804990).

Almost surely, 2^5533661503 is an apocalyptic number.

5533661503 is a deficient number, since it is larger than the sum of its proper divisors (149558457).

5533661503 is a wasteful number, since it uses less digits than its factorization.

5533661503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149558456.

The product of its (nonzero) digits is 121500, while the sum is 37.

The square root of 5533661503 is about 74388.5844938590. The cubic root of 5533661503 is about 1768.7679620296.

The spelling of 5533661503 in words is "five billion, five hundred thirty-three million, six hundred sixty-one thousand, five hundred three".