555100397 has 4 divisors (see below), whose sum is σ = 574241820. Its totient is φ = 535958976.

The previous prime is 555100391. The next prime is 555100417. The reversal of 555100397 is 793001555.

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 97397161 + 457703236 = 9869^2 + 21394^2 .

It is not a de Polignac number, because 555100397 - 2¹² = 555096301 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 (555100391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9570668 + ... + 9570725.

It is an arithmetic number, because the mean of its divisors is an integer number (143560455).

Almost surely, 2^555100397 is an apocalyptic number.

It is an amenable number.

555100397 is a deficient number, since it is larger than the sum of its proper divisors (19141423).

555100397 is a wasteful number, since it uses less digits than its factorization.

555100397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19141422.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 555100397 is about 23560.5686900805. The cubic root of 555100397 is about 821.8461265997.

The spelling of 555100397 in words is "five hundred fifty-five million, one hundred thousand, three hundred ninety-seven".