55555333 has 2 divisors, whose sum is σ = 55555334. Its totient is φ = 55555332.

The previous prime is 55555307. The next prime is 55555349. The reversal of 55555333 is 33355555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40678884 + 14876449 = 6378^2 + 3857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55555333 is a prime.

It is a super-3 number, since 3×55555333³ (a number of 24 digits) contains 333 as substring.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777666 + 27777667.

It is an arithmetic number, because the mean of its divisors is an integer number (27777667).

Almost surely, 2^55555333 is an apocalyptic number.

It is an amenable number.

55555333 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555333 is an equidigital number, since it uses as much as digits as its factorization.

55555333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84375, while the sum is 34.

The square root of 55555333 is about 7453.5449955038. The cubic root of 55555333 is about 381.5709046587.

The spelling of 55555333 in words is "fifty-five million, five hundred fifty-five thousand, three hundred thirty-three".