55283009 has 4 divisors (see below), whose sum is σ = 55307460. Its totient is φ = 55258560.

The previous prime is 55282987. The next prime is 55283017. The reversal of 55283009 is 90038255.

It is a happy number.

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 26553409 + 28729600 = 5153^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 55283009 - 2⁸ = 55282753 is a prime.

It is a super-2 number, since 2×55283009² = 6112422168188162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55283029) 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, 8444 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (13826865).

Almost surely, 2^55283009 is an apocalyptic number.

It is an amenable number.

55283009 is a deficient number, since it is larger than the sum of its proper divisors (24451).

55283009 is a wasteful number, since it uses less digits than its factorization.

55283009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24450.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 55283009 is about 7435.2544677368. The cubic root of 55283009 is about 380.9464151717.

The spelling of 55283009 in words is "fifty-five million, two hundred eighty-three thousand, nine".