55563261 has 8 divisors (see below), whose sum is σ = 79783200. Its totient is φ = 34192752.

The previous prime is 55563229. The next prime is 55563269. The reversal of 55563261 is 16236555.

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

It is not a de Polignac number, because 55563261 - 2⁵ = 55563229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712311 + ... + 712388.

It is an arithmetic number, because the mean of its divisors is an integer number (9972900).

Almost surely, 2^55563261 is an apocalyptic number.

It is an amenable number.

55563261 is a deficient number, since it is larger than the sum of its proper divisors (24219939).

55563261 is a wasteful number, since it uses less digits than its factorization.

55563261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424715.

The product of its digits is 27000, while the sum is 33.

The square root of 55563261 is about 7454.0768040046. The cubic root of 55563261 is about 381.5890544329.

The spelling of 55563261 in words is "fifty-five million, five hundred sixty-three thousand, two hundred sixty-one".