55987198 has 8 divisors (see below), whose sum is σ = 87632208. Its totient is φ = 26776464.

The previous prime is 55987187. The next prime is 55987201. The reversal of 55987198 is 89178955.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608511 + ... + 608602.

It is an arithmetic number, because the mean of its divisors is an integer number (10954026).

Almost surely, 2^55987198 is an apocalyptic number.

55987198 is a deficient number, since it is larger than the sum of its proper divisors (31645010).

55987198 is a wasteful number, since it uses less digits than its factorization.

55987198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217138.

The product of its digits is 907200, while the sum is 52.

The square root of 55987198 is about 7482.4593550517. The cubic root of 55987198 is about 382.5570803504.

The spelling of 55987198 in words is "fifty-five million, nine hundred eighty-seven thousand, one hundred ninety-eight".