55032749 has 4 divisors (see below), whose sum is σ = 56930460. Its totient is φ = 53135040.

The previous prime is 55032737. The next prime is 55032773. The reversal of 55032749 is 94723055.

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 44983849 + 10048900 = 6707^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 55032749 - 2²⁰ = 53984173 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 (55032799) 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, 948812 + ... + 948869.

It is an arithmetic number, because the mean of its divisors is an integer number (14232615).

Almost surely, 2^55032749 is an apocalyptic number.

It is an amenable number.

55032749 is a deficient number, since it is larger than the sum of its proper divisors (1897711).

55032749 is a wasteful number, since it uses less digits than its factorization.

55032749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897710.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 55032749 is about 7418.4060956515. The cubic root of 55032749 is about 380.3707116393.

The spelling of 55032749 in words is "fifty-five million, thirty-two thousand, seven hundred forty-nine".