55620079 has 2 divisors, whose sum is σ = 55620080. Its totient is φ = 55620078.

The previous prime is 55620053. The next prime is 55620101. The reversal of 55620079 is 97002655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55620079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55620679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27810039 + 27810040.

It is an arithmetic number, because the mean of its divisors is an integer number (27810040).

Almost surely, 2^55620079 is an apocalyptic number.

55620079 is a deficient number, since it is larger than the sum of its proper divisors (1).

55620079 is an equidigital number, since it uses as much as digits as its factorization.

55620079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 55620079 is about 7457.8870332018. The cubic root of 55620079 is about 381.7190788439.

The spelling of 55620079 in words is "fifty-five million, six hundred twenty thousand, seventy-nine".