55624161 has 4 divisors (see below), whose sum is σ = 74165552. Its totient is φ = 37082772.

The previous prime is 55624159. The next prime is 55624183. The reversal of 55624161 is 16142655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55624161 - 2¹ = 55624159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55624111) 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 3 ways as a sum of consecutive naturals, for example, 9270691 + ... + 9270696.

It is an arithmetic number, because the mean of its divisors is an integer number (18541388).

Almost surely, 2^55624161 is an apocalyptic number.

It is an amenable number.

55624161 is a deficient number, since it is larger than the sum of its proper divisors (18541391).

55624161 is a wasteful number, since it uses less digits than its factorization.

55624161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541390.

The product of its digits is 7200, while the sum is 30.

The square root of 55624161 is about 7458.1606981883. The cubic root of 55624161 is about 381.7284168335.

The spelling of 55624161 in words is "fifty-five million, six hundred twenty-four thousand, one hundred sixty-one".