55516641 has 8 divisors (see below), whose sum is σ = 77240640. Its totient is φ = 35401872.

The previous prime is 55516639. The next prime is 55516661. The reversal of 55516641 is 14661555.

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

It is not a de Polignac number, because 55516641 - 2¹ = 55516639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55516661) 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, 402226 + ... + 402363.

It is an arithmetic number, because the mean of its divisors is an integer number (9655080).

Almost surely, 2^55516641 is an apocalyptic number.

It is an amenable number.

55516641 is a deficient number, since it is larger than the sum of its proper divisors (21723999).

55516641 is a wasteful number, since it uses less digits than its factorization.

55516641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804615.

The product of its digits is 18000, while the sum is 33.

The square root of 55516641 is about 7450.9489999597. The cubic root of 55516641 is about 381.4823012825.

The spelling of 55516641 in words is "fifty-five million, five hundred sixteen thousand, six hundred forty-one".