55021373 has 16 divisors (see below), whose sum is σ = 62277120. Its totient is φ = 48158400.

The previous prime is 55021363. The next prime is 55021391. The reversal of 55021373 is 37312055.

It is a cyclic number.

It is not a de Polignac number, because 55021373 - 2⁴ = 55021357 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 (55021363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107843 + ... + 108351.

It is an arithmetic number, because the mean of its divisors is an integer number (3892320).

Almost surely, 2^55021373 is an apocalyptic number.

It is an amenable number.

55021373 is a deficient number, since it is larger than the sum of its proper divisors (7255747).

55021373 is a wasteful number, since it uses less digits than its factorization.

55021373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 55021373 is about 7417.6393144989. The cubic root of 55021373 is about 380.3445006075.

The spelling of 55021373 in words is "fifty-five million, twenty-one thousand, three hundred seventy-three".