55299031 has 2 divisors, whose sum is σ = 55299032. Its totient is φ = 55299030.

The previous prime is 55298983. The next prime is 55299047. The reversal of 55299031 is 13099255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55299031 - 2¹⁹ = 54774743 is a prime.

It is a super-2 number, since 2×55299031² = 6115965659077922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55299931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27649515 + 27649516.

It is an arithmetic number, because the mean of its divisors is an integer number (27649516).

Almost surely, 2^55299031 is an apocalyptic number.

55299031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55299031 is an equidigital number, since it uses as much as digits as its factorization.

55299031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55299031 is about 7436.3318242262. The cubic root of 55299031 is about 380.9832133009.

The spelling of 55299031 in words is "fifty-five million, two hundred ninety-nine thousand, thirty-one".