55020379 has 2 divisors, whose sum is σ = 55020380. Its totient is φ = 55020378.

The previous prime is 55020377. The next prime is 55020403. The reversal of 55020379 is 97302055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55020379 - 2¹ = 55020377 is a prime.

Together with 55020377, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55020379.

It is not a weakly prime, because it can be changed into another prime (55020373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27510189 + 27510190.

It is an arithmetic number, because the mean of its divisors is an integer number (27510190).

Almost surely, 2^55020379 is an apocalyptic number.

55020379 is a deficient number, since it is larger than the sum of its proper divisors (1).

55020379 is an equidigital number, since it uses as much as digits as its factorization.

55020379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 55020379 is about 7417.5723117473. The cubic root of 55020379 is about 380.3422101962.

The spelling of 55020379 in words is "fifty-five million, twenty thousand, three hundred seventy-nine".