55283381 has 2 divisors, whose sum is σ = 55283382. Its totient is φ = 55283380.

The previous prime is 55283341. The next prime is 55283387. The reversal of 55283381 is 18338255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52852900 + 2430481 = 7270^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 55283381 - 2⁶ = 55283317 is a prime.

It is a super-2 number, since 2×55283381² = 6112504429582322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55283387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27641690 + 27641691.

It is an arithmetic number, because the mean of its divisors is an integer number (27641691).

Almost surely, 2^55283381 is an apocalyptic number.

It is an amenable number.

55283381 is a deficient number, since it is larger than the sum of its proper divisors (1).

55283381 is an equidigital number, since it uses as much as digits as its factorization.

55283381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The square root of 55283381 is about 7435.2794836509. The cubic root of 55283381 is about 380.9472696340.

The spelling of 55283381 in words is "fifty-five million, two hundred eighty-three thousand, three hundred eighty-one".