55262231 has 2 divisors, whose sum is σ = 55262232. Its totient is φ = 55262230.

The previous prime is 55262209. The next prime is 55262239. The reversal of 55262231 is 13226255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55262231 - 2⁶ = 55262167 is a prime.

It is a super-2 number, since 2×55262231² = 6107828350194722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55262231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55262239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631115 + 27631116.

It is an arithmetic number, because the mean of its divisors is an integer number (27631116).

Almost surely, 2^55262231 is an apocalyptic number.

55262231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55262231 is an equidigital number, since it uses as much as digits as its factorization.

55262231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 55262231 is about 7433.8570742247. The cubic root of 55262231 is about 380.8986832277.

Adding to 55262231 its reverse (13226255), we get a palindrome (68488486).

The spelling of 55262231 in words is "fifty-five million, two hundred sixty-two thousand, two hundred thirty-one".