55353969 has 16 divisors (see below), whose sum is σ = 89461440. Its totient is φ = 33547680.

The previous prime is 55353967. The next prime is 55353979. The reversal of 55353969 is 96935355.

It is a happy number.

55353969 is a `hidden beast` number, since 5 + 53 + 539 + 69 = 666.

It is not a de Polignac number, because 55353969 - 2¹ = 55353967 is a prime.

It is a super-2 number, since 2×55353969² = 6128123768105922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55353967) 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, 92892 + ... + 93485.

It is an arithmetic number, because the mean of its divisors is an integer number (5591340).

Almost surely, 2^55353969 is an apocalyptic number.

It is an amenable number.

55353969 is a deficient number, since it is larger than the sum of its proper divisors (34107471).

55353969 is a wasteful number, since it uses less digits than its factorization.

55353969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186397 (or 186391 counting only the distinct ones).

The product of its digits is 546750, while the sum is 45.

The square root of 55353969 is about 7440.0247983458. The cubic root of 55353969 is about 381.1093368390.

The spelling of 55353969 in words is "fifty-five million, three hundred fifty-three thousand, nine hundred sixty-nine".