55307573 has 4 divisors (see below), whose sum is σ = 55327008. Its totient is φ = 55288140.

The previous prime is 55307569. The next prime is 55307591. The reversal of 55307573 is 37570355.

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 55307573 - 2² = 55307569 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 (55307513) 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, 4523 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (13831752).

Almost surely, 2^55307573 is an apocalyptic number.

It is an amenable number.

55307573 is a deficient number, since it is larger than the sum of its proper divisors (19435).

55307573 is a wasteful number, since it uses less digits than its factorization.

55307573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19434.

The product of its (nonzero) digits is 55125, while the sum is 35.

The square root of 55307573 is about 7436.9061443587. The cubic root of 55307573 is about 381.0028290217.

The spelling of 55307573 in words is "fifty-five million, three hundred seven thousand, five hundred seventy-three".