55943533 has 4 divisors (see below), whose sum is σ = 56183868. Its totient is φ = 55703200.

The previous prime is 55943509. The next prime is 55943551. The reversal of 55943533 is 33534955.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40475044 + 15468489 = 6362^2 + 3933^2 .

It is a cyclic number.

It is not a de Polignac number, because 55943533 - 2⁹ = 55943021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55943492 and 55943501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55943333) 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, 119818 + ... + 120283.

It is an arithmetic number, because the mean of its divisors is an integer number (14045967).

Almost surely, 2^55943533 is an apocalyptic number.

It is an amenable number.

55943533 is a deficient number, since it is larger than the sum of its proper divisors (240335).

55943533 is a wasteful number, since it uses less digits than its factorization.

55943533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240334.

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

The square root of 55943533 is about 7479.5409618505. The cubic root of 55943533 is about 382.4576010645.

The spelling of 55943533 in words is "fifty-five million, nine hundred forty-three thousand, five hundred thirty-three".