55997698 has 8 divisors (see below), whose sum is σ = 84029760. Its totient is φ = 27987780.

The previous prime is 55997671. The next prime is 55997699. The reversal of 55997698 is 89679955.

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

It is not an unprimeable number, because it can be changed into a prime (55997699) 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, 4243 + ... + 11401.

It is an arithmetic number, because the mean of its divisors is an integer number (10503720).

Almost surely, 2^55997698 is an apocalyptic number.

55997698 is a deficient number, since it is larger than the sum of its proper divisors (28032062).

55997698 is a wasteful number, since it uses less digits than its factorization.

55997698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072.

The product of its digits is 6123600, while the sum is 58.

The square root of 55997698 is about 7483.1609631225. The cubic root of 55997698 is about 382.5809941403.

The spelling of 55997698 in words is "fifty-five million, nine hundred ninety-seven thousand, six hundred ninety-eight".