55436998 has 4 divisors (see below), whose sum is σ = 83155500. Its totient is φ = 27718498.

The previous prime is 55436977. The next prime is 55436999. The reversal of 55436998 is 89963455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89963455 = 5 ⋅17992691.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55436999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13859248 + ... + 13859251.

It is an arithmetic number, because the mean of its divisors is an integer number (20788875).

Almost surely, 2^55436998 is an apocalyptic number.

55436998 is a deficient number, since it is larger than the sum of its proper divisors (27718502).

55436998 is a wasteful number, since it uses less digits than its factorization.

55436998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27718501.

The product of its digits is 1166400, while the sum is 49.

The square root of 55436998 is about 7445.6025948207. The cubic root of 55436998 is about 381.2997918306.

The spelling of 55436998 in words is "fifty-five million, four hundred thirty-six thousand, nine hundred ninety-eight".