55377329 has 4 divisors (see below), whose sum is σ = 63288384. Its totient is φ = 47466276.

The previous prime is 55377323. The next prime is 55377349. The reversal of 55377329 is 92377355.

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 a cyclic number.

It is not a de Polignac number, because 55377329 - 2⁸ = 55377073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55377323) 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, 3955517 + ... + 3955530.

It is an arithmetic number, because the mean of its divisors is an integer number (15822096).

Almost surely, 2^55377329 is an apocalyptic number.

It is an amenable number.

55377329 is a deficient number, since it is larger than the sum of its proper divisors (7911055).

55377329 is an equidigital number, since it uses as much as digits as its factorization.

55377329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911054.

The product of its digits is 198450, while the sum is 41.

The square root of 55377329 is about 7441.5945199937. The cubic root of 55377329 is about 381.1629401139.

The spelling of 55377329 in words is "fifty-five million, three hundred seventy-seven thousand, three hundred twenty-nine".