55200649 has 16 divisors (see below), whose sum is σ = 67326336. Its totient is φ = 44179200.

The previous prime is 55200631. The next prime is 55200661. The reversal of 55200649 is 94600255.

It is a cyclic number.

It is not a de Polignac number, because 55200649 - 2⁷ = 55200521 is a prime.

It is a super-2 number, since 2×55200649² = 6094223300042402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55200649.

It is not an unprimeable number, because it can be changed into a prime (55200349) 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, 13819 + ... + 17359.

It is an arithmetic number, because the mean of its divisors is an integer number (4207896).

Almost surely, 2^55200649 is an apocalyptic number.

It is an amenable number.

55200649 is a deficient number, since it is larger than the sum of its proper divisors (12125687).

55200649 is a wasteful number, since it uses less digits than its factorization.

55200649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55200649 is about 7429.7139245061. The cubic root of 55200649 is about 380.7571445995.

It can be divided in two parts, 55 and 200649, that added together give a square (200704 = 448²).

The spelling of 55200649 in words is "fifty-five million, two hundred thousand, six hundred forty-nine".