55552493 has 2 divisors, whose sum is σ = 55552494. Its totient is φ = 55552492.

The previous prime is 55552477. The next prime is 55552531. The reversal of 55552493 is 39425555.

It is an a-pointer prime, because the next prime (55552531) can be obtained adding 55552493 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31326409 + 24226084 = 5597^2 + 4922^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552493 - 2⁴ = 55552477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55552793) 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, 27776246 + 27776247.

It is an arithmetic number, because the mean of its divisors is an integer number (27776247).

Almost surely, 2^55552493 is an apocalyptic number.

It is an amenable number.

55552493 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552493 is an equidigital number, since it uses as much as digits as its factorization.

55552493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 38.

The square root of 55552493 is about 7453.3544796957. The cubic root of 55552493 is about 381.5644025537.

The spelling of 55552493 in words is "fifty-five million, five hundred fifty-two thousand, four hundred ninety-three".