55698889 has 4 divisors (see below), whose sum is σ = 56994256. Its totient is φ = 54403524.

The previous prime is 55698887. The next prime is 55698911. The reversal of 55698889 is 98889655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55698889 - 2¹ = 55698887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55698887) 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, 647619 + ... + 647704.

It is an arithmetic number, because the mean of its divisors is an integer number (14248564).

Almost surely, 2^55698889 is an apocalyptic number.

It is an amenable number.

55698889 is a deficient number, since it is larger than the sum of its proper divisors (1295367).

55698889 is a wasteful number, since it uses less digits than its factorization.

55698889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295366.

The product of its digits is 6220800, while the sum is 58.

The square root of 55698889 is about 7463.1688309993. The cubic root of 55698889 is about 381.8992840482.

The spelling of 55698889 in words is "fifty-five million, six hundred ninety-eight thousand, eight hundred eighty-nine".