55673279 has 2 divisors, whose sum is σ = 55673280. Its totient is φ = 55673278.

The previous prime is 55673269. The next prime is 55673309. The reversal of 55673279 is 97237655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55673279 is a prime.

It is a super-2 number, since 2×55673279² = 6199027989223682, which contains 22 as substring.

It is a Sophie Germain 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 (55673209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27836639 + 27836640.

It is an arithmetic number, because the mean of its divisors is an integer number (27836640).

Almost surely, 2^55673279 is an apocalyptic number.

55673279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55673279 is an equidigital number, since it uses as much as digits as its factorization.

55673279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 44.

The square root of 55673279 is about 7461.4528746083. The cubic root of 55673279 is about 381.8407434428.

The spelling of 55673279 in words is "fifty-five million, six hundred seventy-three thousand, two hundred seventy-nine".