55160621 has 8 divisors (see below), whose sum is σ = 56918400. Its totient is φ = 53422560.

The previous prime is 55160587. The next prime is 55160641. The reversal of 55160621 is 12606155.

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

It is a cyclic number.

It is not a de Polignac number, because 55160621 - 2¹⁴ = 55144237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55160641) 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, 860 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (7114800).

Almost surely, 2^55160621 is an apocalyptic number.

It is an amenable number.

55160621 is a deficient number, since it is larger than the sum of its proper divisors (1757779).

55160621 is a wasteful number, since it uses less digits than its factorization.

55160621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9859.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 55160621 is about 7427.0196579786. The cubic root of 55160621 is about 380.6650887229.

Adding to 55160621 its reverse (12606155), we get a palindrome (67766776).

The spelling of 55160621 in words is "fifty-five million, one hundred sixty thousand, six hundred twenty-one".