55620481 has 8 divisors (see below), whose sum is σ = 67305600. Its totient is φ = 44870208.

The previous prime is 55620473. The next prime is 55620511. The reversal of 55620481 is 18402655.

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

It is not a de Polignac number, because 55620481 - 2³ = 55620473 is a prime.

It is a super-2 number, since 2×55620481² = 6187275813342722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55620401) 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 7 ways as a sum of consecutive naturals, for example, 233581 + ... + 233818.

It is an arithmetic number, because the mean of its divisors is an integer number (8413200).

Almost surely, 2^55620481 is an apocalyptic number.

It is an amenable number.

55620481 is a deficient number, since it is larger than the sum of its proper divisors (11685119).

55620481 is a wasteful number, since it uses less digits than its factorization.

55620481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467423.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 55620481 is about 7457.9139844865. The cubic root of 55620481 is about 381.7199984800.

The spelling of 55620481 in words is "fifty-five million, six hundred twenty thousand, four hundred eighty-one".