55406373 has 32 divisors (see below), whose sum is σ = 83220480. Its totient is φ = 32501760.

The previous prime is 55406347. The next prime is 55406423. The reversal of 55406373 is 37360455.

It is not a de Polignac number, because 55406373 - 2¹³ = 55398181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55406173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215461 + ... + 215717.

It is an arithmetic number, because the mean of its divisors is an integer number (2600640).

Almost surely, 2^55406373 is an apocalyptic number.

It is an amenable number.

55406373 is a deficient number, since it is larger than the sum of its proper divisors (27814107).

55406373 is a wasteful number, since it uses less digits than its factorization.

55406373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 37800, while the sum is 33.

The square root of 55406373 is about 7443.5457276758. The cubic root of 55406373 is about 381.2295652220.

The spelling of 55406373 in words is "fifty-five million, four hundred six thousand, three hundred seventy-three".