55620705 has 32 divisors (see below), whose sum is σ = 102037248. Its totient is φ = 25344000.

The previous prime is 55620689. The next prime is 55620709. The reversal of 55620705 is 50702655.

It is not a de Polignac number, because 55620705 - 2⁴ = 55620689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55620709) 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, 41445 + ... + 42765.

It is an arithmetic number, because the mean of its divisors is an integer number (3188664).

Almost surely, 2^55620705 is an apocalyptic number.

It is an amenable number.

55620705 is a deficient number, since it is larger than the sum of its proper divisors (46416543).

55620705 is a wasteful number, since it uses less digits than its factorization.

55620705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55620705 is about 7457.9290020756. The cubic root of 55620705 is about 381.7205109121.

The spelling of 55620705 in words is "fifty-five million, six hundred twenty thousand, seven hundred five".