55520398 has 8 divisors (see below), whose sum is σ = 83329992. Its totient is φ = 27743736.

The previous prime is 55520393. The next prime is 55520401. The reversal of 55520398 is 89302555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3465 + ... + 11092.

It is an arithmetic number, because the mean of its divisors is an integer number (10416249).

Almost surely, 2^55520398 is an apocalyptic number.

55520398 is a deficient number, since it is larger than the sum of its proper divisors (27809594).

55520398 is a wasteful number, since it uses less digits than its factorization.

55520398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16466.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 55520398 is about 7451.2011112303. The cubic root of 55520398 is about 381.4909064902.

The spelling of 55520398 in words is "fifty-five million, five hundred twenty thousand, three hundred ninety-eight".