55436645 has 8 divisors (see below), whose sum is σ = 72571680. Its totient is φ = 40317520.

The previous prime is 55436629. The next prime is 55436651. The reversal of 55436645 is 54663455.

It is a happy number.

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

It is not a de Polignac number, because 55436645 - 2⁴ = 55436629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55436599 and 55436608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503915 + ... + 504024.

It is an arithmetic number, because the mean of its divisors is an integer number (9071460).

Almost surely, 2^55436645 is an apocalyptic number.

55436645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55436645 is a deficient number, since it is larger than the sum of its proper divisors (17135035).

55436645 is a wasteful number, since it uses less digits than its factorization.

55436645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007955.

The product of its digits is 216000, while the sum is 38.

The square root of 55436645 is about 7445.5788895156. The cubic root of 55436645 is about 381.2989825088.

The spelling of 55436645 in words is "fifty-five million, four hundred thirty-six thousand, six hundred forty-five".