55445953 has 2 divisors, whose sum is σ = 55445954. Its totient is φ = 55445952.

The previous prime is 55445867. The next prime is 55445969. The reversal of 55445953 is 35954455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29517489 + 25928464 = 5433^2 + 5092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55445953 is a prime.

It is not a weakly prime, because it can be changed into another prime (55445983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722976 + 27722977.

It is an arithmetic number, because the mean of its divisors is an integer number (27722977).

Almost surely, 2^55445953 is an apocalyptic number.

It is an amenable number.

55445953 is a deficient number, since it is larger than the sum of its proper divisors (1).

55445953 is an equidigital number, since it uses as much as digits as its factorization.

55445953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270000, while the sum is 40.

The square root of 55445953 is about 7446.2039322060. The cubic root of 55445953 is about 381.3203217770.

The spelling of 55445953 in words is "fifty-five million, four hundred forty-five thousand, nine hundred fifty-three".