55804297 has 4 divisors (see below), whose sum is σ = 56230416. Its totient is φ = 55378180.

The previous prime is 55804289. The next prime is 55804313. The reversal of 55804297 is 79240855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79240855 = 5 ⋅15848171.

It is a cyclic number.

It is not a de Polignac number, because 55804297 - 2³ = 55804289 is a prime.

It is a super-2 number, since 2×55804297² = 6228239127328418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55804097) 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, 212863 + ... + 213124.

It is an arithmetic number, because the mean of its divisors is an integer number (14057604).

Almost surely, 2^55804297 is an apocalyptic number.

It is an amenable number.

55804297 is a deficient number, since it is larger than the sum of its proper divisors (426119).

55804297 is a wasteful number, since it uses less digits than its factorization.

55804297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426118.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 55804297 is about 7470.2273727110. The cubic root of 55804297 is about 382.1400421273.

The spelling of 55804297 in words is "fifty-five million, eight hundred four thousand, two hundred ninety-seven".