55641730 has 16 divisors (see below), whose sum is σ = 100336320. Its totient is φ = 22216432.

The previous prime is 55641727. The next prime is 55641739. The reversal of 55641730 is 3714655.

It is a junction number, because it is equal to n+sod(n) for n = 55641692 and 55641701.

It is not an unprimeable number, because it can be changed into a prime (55641739) 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, 1131 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (6271020).

Almost surely, 2^55641730 is an apocalyptic number.

55641730 is a deficient number, since it is larger than the sum of its proper divisors (44694590).

55641730 is a wasteful number, since it uses less digits than its factorization.

55641730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10073.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 55641730 is about 7459.3384425162. The cubic root of 55641730 is about 381.7686024918.

The spelling of 55641730 in words is "fifty-five million, six hundred forty-one thousand, seven hundred thirty".