55621463 has 4 divisors (see below), whose sum is σ = 55721880. Its totient is φ = 55521048.

The previous prime is 55621459. The next prime is 55621477. The reversal of 55621463 is 36412655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55621463 - 2² = 55621459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55621453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49373 + ... + 50486.

It is an arithmetic number, because the mean of its divisors is an integer number (13930470).

Almost surely, 2^55621463 is an apocalyptic number.

55621463 is a deficient number, since it is larger than the sum of its proper divisors (100417).

55621463 is an equidigital number, since it uses as much as digits as its factorization.

55621463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100416.

The product of its digits is 21600, while the sum is 32.

The square root of 55621463 is about 7457.9798202999. The cubic root of 55621463 is about 381.7222449356.

The spelling of 55621463 in words is "fifty-five million, six hundred twenty-one thousand, four hundred sixty-three".