55889897 has 16 divisors (see below), whose sum is σ = 67962240. Its totient is φ = 44867328.

The previous prime is 55889881. The next prime is 55889903. The reversal of 55889897 is 79898855.

It is a cyclic number.

It is not a de Polignac number, because 55889897 - 2⁴ = 55889881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55889837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25979 + ... + 28047.

It is an arithmetic number, because the mean of its divisors is an integer number (4247640).

Almost surely, 2^55889897 is an apocalyptic number.

It is an amenable number.

55889897 is a deficient number, since it is larger than the sum of its proper divisors (12072343).

55889897 is a wasteful number, since it uses less digits than its factorization.

55889897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its digits is 7257600, while the sum is 59.

The square root of 55889897 is about 7475.9545878771. The cubic root of 55889897 is about 382.3353345929.

The spelling of 55889897 in words is "fifty-five million, eight hundred eighty-nine thousand, eight hundred ninety-seven".