55550073 has 8 divisors (see below), whose sum is σ = 74148768. Its totient is φ = 36992384.

The previous prime is 55550059. The next prime is 55550081. The reversal of 55550073 is 37005555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55550073 - 2⁵ = 55550041 is a prime.

It is a super-2 number, since 2×55550073² = 6171621220610658, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55550073.

It is not an unprimeable number, because it can be changed into a prime (55550273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6936 + ... + 12617.

It is an arithmetic number, because the mean of its divisors is an integer number (9268596).

Almost surely, 2^55550073 is an apocalyptic number.

It is an amenable number.

55550073 is a deficient number, since it is larger than the sum of its proper divisors (18598695).

55550073 is a wasteful number, since it uses less digits than its factorization.

55550073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20503.

The product of its (nonzero) digits is 13125, while the sum is 30.

The square root of 55550073 is about 7453.1921349178. The cubic root of 55550073 is about 381.5588618527.

The spelling of 55550073 in words is "fifty-five million, five hundred fifty thousand, seventy-three".