55309001 has 4 divisors (see below), whose sum is σ = 60337104. Its totient is φ = 50280900.

The previous prime is 55308971. The next prime is 55309013. The reversal of 55309001 is 10090355.

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 55309001 - 2¹⁰ = 55307977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55309021) 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, 2514035 + ... + 2514056.

It is an arithmetic number, because the mean of its divisors is an integer number (15084276).

Almost surely, 2^55309001 is an apocalyptic number.

It is an amenable number.

55309001 is a deficient number, since it is larger than the sum of its proper divisors (5028103).

55309001 is a wasteful number, since it uses less digits than its factorization.

55309001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028102.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 55309001 is about 7437.0021514048. The cubic root of 55309001 is about 381.0061080624.

Adding to 55309001 its reverse (10090355), we get a palindrome (65399356).

The spelling of 55309001 in words is "fifty-five million, three hundred nine thousand, one".