55516169 has 8 divisors (see below), whose sum is σ = 60371208. Its totient is φ = 50837760.

The previous prime is 55516163. The next prime is 55516171. The reversal of 55516169 is 96161555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10465225 + 45050944 = 3235^2 + 6712^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55516169 is a prime.

It is a super-2 number, since 2×55516169² = 6164090040873122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55516163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43502 + ... + 44759.

It is an arithmetic number, because the mean of its divisors is an integer number (7546401).

Almost surely, 2^55516169 is an apocalyptic number.

It is an amenable number.

55516169 is a deficient number, since it is larger than the sum of its proper divisors (4855039).

55516169 is a wasteful number, since it uses less digits than its factorization.

55516169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88315.

The product of its digits is 40500, while the sum is 38.

The square root of 55516169 is about 7450.9173260747. The cubic root of 55516169 is about 381.4812201643.

The spelling of 55516169 in words is "fifty-five million, five hundred sixteen thousand, one hundred sixty-nine".