55164399 has 16 divisors (see below), whose sum is σ = 75715200. Its totient is φ = 35705376.

The previous prime is 55164397. The next prime is 55164401. The reversal of 55164399 is 99346155.

It is an interprime number because it is at equal distance from previous prime (55164397) and next prime (55164401).

It is not a de Polignac number, because 55164399 - 2¹ = 55164397 is a prime.

It is a super-2 number, since 2×55164399² = 6086221834062402, which contains 22 as substring.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 55164399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55164397) 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, 21897 + ... + 24285.

It is an arithmetic number, because the mean of its divisors is an integer number (4732200).

Almost surely, 2^55164399 is an apocalyptic number.

55164399 is a deficient number, since it is larger than the sum of its proper divisors (20550801).

55164399 is a wasteful number, since it uses less digits than its factorization.

55164399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614.

The product of its digits is 145800, while the sum is 42.

The square root of 55164399 is about 7427.2739952152. The cubic root of 55164399 is about 380.6737792214.

The spelling of 55164399 in words is "fifty-five million, one hundred sixty-four thousand, three hundred ninety-nine".