55451953 has 2 divisors, whose sum is σ = 55451954. Its totient is φ = 55451952.

The previous prime is 55451941. The next prime is 55451969. The reversal of 55451953 is 35915455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45792289 + 9659664 = 6767^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 55451953 - 2⁹ = 55451441 is a prime.

It is not a weakly prime, because it can be changed into another prime (55451933) 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, 27725976 + 27725977.

It is an arithmetic number, because the mean of its divisors is an integer number (27725977).

Almost surely, 2^55451953 is an apocalyptic number.

It is an amenable number.

55451953 is a deficient number, since it is larger than the sum of its proper divisors (1).

55451953 is an equidigital number, since it uses as much as digits as its factorization.

55451953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 37.

The square root of 55451953 is about 7446.6068111590. The cubic root of 55451953 is about 381.3340759483.

Adding to 55451953 its product of digits (67500), we get a triangular number (55519453 = T₁₀₅₃₇).

The spelling of 55451953 in words is "fifty-five million, four hundred fifty-one thousand, nine hundred fifty-three".