55340993 has 2 divisors, whose sum is σ = 55340994. Its totient is φ = 55340992.

The previous prime is 55340981. The next prime is 55341007. The reversal of 55340993 is 39904355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38093584 + 17247409 = 6172^2 + 4153^2 .

It is a cyclic number.

It is not a de Polignac number, because 55340993 - 2¹⁴ = 55324609 is a prime.

It is not a weakly prime, because it can be changed into another prime (55340953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27670496 + 27670497.

It is an arithmetic number, because the mean of its divisors is an integer number (27670497).

Almost surely, 2^55340993 is an apocalyptic number.

It is an amenable number.

55340993 is a deficient number, since it is larger than the sum of its proper divisors (1).

55340993 is an equidigital number, since it uses as much as digits as its factorization.

55340993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 55340993 is about 7439.1527071300. The cubic root of 55340993 is about 381.0795548058.

The spelling of 55340993 in words is "fifty-five million, three hundred forty thousand, nine hundred ninety-three".