55450609 has 4 divisors (see below), whose sum is σ = 55472704. Its totient is φ = 55428516.

The previous prime is 55450601. The next prime is 55450621. The reversal of 55450609 is 90605455.

It is a happy number.

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 55450609 - 2³ = 55450601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55450601) 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, 6717 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (13868176).

Almost surely, 2^55450609 is an apocalyptic number.

It is an amenable number.

55450609 is a deficient number, since it is larger than the sum of its proper divisors (22095).

55450609 is a wasteful number, since it uses less digits than its factorization.

55450609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22094.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55450609 is about 7446.5165681680. The cubic root of 55450609 is about 381.3309951002.

The spelling of 55450609 in words is "fifty-five million, four hundred fifty thousand, six hundred nine".