55430663 has 4 divisors (see below), whose sum is σ = 55521120. Its totient is φ = 55340208.

The previous prime is 55430653. The next prime is 55430671. The reversal of 55430663 is 36603455.

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 55430663 - 2⁸ = 55430407 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 (55430653) 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, 44303 + ... + 45536.

It is an arithmetic number, because the mean of its divisors is an integer number (13880280).

Almost surely, 2^55430663 is an apocalyptic number.

55430663 is a deficient number, since it is larger than the sum of its proper divisors (90457).

55430663 is an equidigital number, since it uses as much as digits as its factorization.

55430663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90456.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 55430663 is about 7445.1771637752. The cubic root of 55430663 is about 381.2852670771.

The spelling of 55430663 in words is "fifty-five million, four hundred thirty thousand, six hundred sixty-three".