55653643 has 4 divisors (see below), whose sum is σ = 55748088. Its totient is φ = 55559200.

The previous prime is 55653623. The next prime is 55653707. The reversal of 55653643 is 34635655.

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 55653643 - 2⁹ = 55653131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55653613) 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, 46333 + ... + 47518.

It is an arithmetic number, because the mean of its divisors is an integer number (13937022).

Almost surely, 2^55653643 is an apocalyptic number.

55653643 is a deficient number, since it is larger than the sum of its proper divisors (94445).

55653643 is an equidigital number, since it uses as much as digits as its factorization.

55653643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94444.

The product of its digits is 162000, while the sum is 37.

The square root of 55653643 is about 7460.1369290382. The cubic root of 55653643 is about 381.7958463417.

The spelling of 55653643 in words is "fifty-five million, six hundred fifty-three thousand, six hundred forty-three".