55321373 has 4 divisors (see below), whose sum is σ = 55413120. Its totient is φ = 55229628.

The previous prime is 55321367. The next prime is 55321429. The reversal of 55321373 is 37312355.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37312355 = 5 ⋅7462471.

It is a cyclic number.

It is not a de Polignac number, because 55321373 - 2⁸ = 55321117 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 (55321333) 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, 44963 + ... + 46176.

It is an arithmetic number, because the mean of its divisors is an integer number (13853280).

Almost surely, 2^55321373 is an apocalyptic number.

It is an amenable number.

55321373 is a deficient number, since it is larger than the sum of its proper divisors (91747).

55321373 is an equidigital number, since it uses as much as digits as its factorization.

55321373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91746.

The product of its digits is 9450, while the sum is 29.

The square root of 55321373 is about 7437.8338916650. The cubic root of 55321373 is about 381.0345148682.

The spelling of 55321373 in words is "fifty-five million, three hundred twenty-one thousand, three hundred seventy-three".