55540319 has 2 divisors, whose sum is σ = 55540320. Its totient is φ = 55540318.

The previous prime is 55540301. The next prime is 55540327. The reversal of 55540319 is 91304555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55540319 - 2²⁰ = 54491743 is a prime.

It is a super-2 number, since 2×55540319² = 6169454069243522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55540349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27770159 + 27770160.

It is an arithmetic number, because the mean of its divisors is an integer number (27770160).

Almost surely, 2^55540319 is an apocalyptic number.

55540319 is a deficient number, since it is larger than the sum of its proper divisors (1).

55540319 is an equidigital number, since it uses as much as digits as its factorization.

55540319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 55540319 is about 7452.5377556910. The cubic root of 55540319 is about 381.5365279907.

The spelling of 55540319 in words is "fifty-five million, five hundred forty thousand, three hundred nineteen".