55641747 has 32 divisors (see below), whose sum is σ = 91686400. Its totient is φ = 29299968.

The previous prime is 55641739. The next prime is 55641767. The reversal of 55641747 is 74714655.

It is not a de Polignac number, because 55641747 - 2³ = 55641739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55641727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12879 + ... + 16647.

It is an arithmetic number, because the mean of its divisors is an integer number (2865200).

Almost surely, 2^55641747 is an apocalyptic number.

55641747 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

55641747 is a deficient number, since it is larger than the sum of its proper divisors (36044653).

55641747 is a wasteful number, since it uses less digits than its factorization.

55641747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835.

The product of its digits is 117600, while the sum is 39.

The square root of 55641747 is about 7459.3395820274. The cubic root of 55641747 is about 381.7686413719.

The spelling of 55641747 in words is "fifty-five million, six hundred forty-one thousand, seven hundred forty-seven".