55213679 has 2 divisors, whose sum is σ = 55213680. Its totient is φ = 55213678.

The previous prime is 55213667. The next prime is 55213693. The reversal of 55213679 is 97631255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55213679 - 2⁸ = 55213423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55213619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27606839 + 27606840.

It is an arithmetic number, because the mean of its divisors is an integer number (27606840).

Almost surely, 2^55213679 is an apocalyptic number.

55213679 is a deficient number, since it is larger than the sum of its proper divisors (1).

55213679 is an equidigital number, since it uses as much as digits as its factorization.

55213679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 55213679 is about 7430.5907571336. The cubic root of 55213679 is about 380.7871012236.

The spelling of 55213679 in words is "fifty-five million, two hundred thirteen thousand, six hundred seventy-nine".