55338719 has 2 divisors, whose sum is σ = 55338720. Its totient is φ = 55338718.

The previous prime is 55338691. The next prime is 55338733. The reversal of 55338719 is 91783355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55338719 - 2¹² = 55334623 is a prime.

It is a super-2 number, since 2×55338719² = 6124747641121922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55338739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27669359 + 27669360.

It is an arithmetic number, because the mean of its divisors is an integer number (27669360).

Almost surely, 2^55338719 is an apocalyptic number.

55338719 is a deficient number, since it is larger than the sum of its proper divisors (1).

55338719 is an equidigital number, since it uses as much as digits as its factorization.

55338719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 55338719 is about 7438.9998655733. Note that the first 3 decimals coincide. The cubic root of 55338719 is about 381.0743351261.

The spelling of 55338719 in words is "fifty-five million, three hundred thirty-eight thousand, seven hundred nineteen".