55003397 has 4 divisors (see below), whose sum is σ = 55217676. Its totient is φ = 54789120.

The previous prime is 55003379. The next prime is 55003409. The reversal of 55003397 is 79330055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35058241 + 19945156 = 5921^2 + 4466^2 .

It is a cyclic number.

It is not a de Polignac number, because 55003397 - 2¹⁰ = 55002373 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 (55003307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106754 + ... + 107267.

It is an arithmetic number, because the mean of its divisors is an integer number (13804419).

Almost surely, 2^55003397 is an apocalyptic number.

It is an amenable number.

55003397 is a deficient number, since it is larger than the sum of its proper divisors (214279).

55003397 is a wasteful number, since it uses less digits than its factorization.

55003397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214278.

The product of its (nonzero) digits is 14175, while the sum is 32.

The square root of 55003397 is about 7416.4275092527. The cubic root of 55003397 is about 380.3030753874.

The spelling of 55003397 in words is "fifty-five million, three thousand, three hundred ninety-seven".