55330453 has 2 divisors, whose sum is σ = 55330454. Its totient is φ = 55330452.

The previous prime is 55330439. The next prime is 55330459. The reversal of 55330453 is 35403355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39025009 + 16305444 = 6247^2 + 4038^2 .

It is a cyclic number.

It is not a de Polignac number, because 55330453 - 2¹³ = 55322261 is a prime.

It is a super-2 number, since 2×55330453² = 6122918058370418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55330459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665226 + 27665227.

It is an arithmetic number, because the mean of its divisors is an integer number (27665227).

Almost surely, 2^55330453 is an apocalyptic number.

It is an amenable number.

55330453 is a deficient number, since it is larger than the sum of its proper divisors (1).

55330453 is an equidigital number, since it uses as much as digits as its factorization.

55330453 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 28.

The square root of 55330453 is about 7438.4442593865. Note that the first 3 decimals coincide. The cubic root of 55330453 is about 381.0553603626.

The spelling of 55330453 in words is "fifty-five million, three hundred thirty thousand, four hundred fifty-three".