55449398 has 4 divisors (see below), whose sum is σ = 83174100. Its totient is φ = 27724698.

The previous prime is 55449397. The next prime is 55449431. The reversal of 55449398 is 89394455.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55449397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862348 + ... + 13862351.

It is an arithmetic number, because the mean of its divisors is an integer number (20793525).

Almost surely, 2^55449398 is an apocalyptic number.

55449398 is a deficient number, since it is larger than the sum of its proper divisors (27724702).

55449398 is a wasteful number, since it uses less digits than its factorization.

55449398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27724701.

The product of its digits is 777600, while the sum is 47.

The square root of 55449398 is about 7446.4352545362. The cubic root of 55449398 is about 381.3282190850.

The spelling of 55449398 in words is "fifty-five million, four hundred forty-nine thousand, three hundred ninety-eight".