55153279 has 2 divisors, whose sum is σ = 55153280. Its totient is φ = 55153278.

The previous prime is 55153271. The next prime is 55153283. The reversal of 55153279 is 97235155.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55153279 - 2³ = 55153271 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 (55153271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27576639 + 27576640.

It is an arithmetic number, because the mean of its divisors is an integer number (27576640).

Almost surely, 2^55153279 is an apocalyptic number.

55153279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55153279 is an equidigital number, since it uses as much as digits as its factorization.

55153279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 37.

The square root of 55153279 is about 7426.5253652028. The cubic root of 55153279 is about 380.6481988533.

The spelling of 55153279 in words is "fifty-five million, one hundred fifty-three thousand, two hundred seventy-nine".