55333397 has 6 divisors (see below), whose sum is σ = 64367478. Its totient is φ = 47428584.

The previous prime is 55333379. The next prime is 55333433. The reversal of 55333397 is 79333355.

It can be written as a sum of positive squares in only one way, i.e., 46771921 + 8561476 = 6839^2 + 2926^2 .

It is not a de Polignac number, because 55333397 - 2⁸ = 55333141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55333397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55333307) 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 5 ways as a sum of consecutive naturals, for example, 564578 + ... + 564675.

It is an arithmetic number, because the mean of its divisors is an integer number (10727913).

Almost surely, 2^55333397 is an apocalyptic number.

It is an amenable number.

55333397 is a deficient number, since it is larger than the sum of its proper divisors (9034081).

55333397 is a wasteful number, since it uses less digits than its factorization.

55333397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129267 (or 1129260 counting only the distinct ones).

The product of its digits is 127575, while the sum is 38.

The square root of 55333397 is about 7438.6421475966. The cubic root of 55333397 is about 381.0621185884.

The spelling of 55333397 in words is "fifty-five million, three hundred thirty-three thousand, three hundred ninety-seven".