55399627 has 4 divisors (see below), whose sum is σ = 56158600. Its totient is φ = 54640656.

The previous prime is 55399601. The next prime is 55399637. The reversal of 55399627 is 72699355.

It is a happy number.

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 55399627 - 2¹¹ = 55397579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55399637) 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, 379377 + ... + 379522.

It is an arithmetic number, because the mean of its divisors is an integer number (14039650).

Almost surely, 2^55399627 is an apocalyptic number.

55399627 is a deficient number, since it is larger than the sum of its proper divisors (758973).

55399627 is an equidigital number, since it uses as much as digits as its factorization.

55399627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758972.

The product of its digits is 510300, while the sum is 46.

The square root of 55399627 is about 7443.0925696245. The cubic root of 55399627 is about 381.2140923989.

The spelling of 55399627 in words is "fifty-five million, three hundred ninety-nine thousand, six hundred twenty-seven".