55533817 has 2 divisors, whose sum is σ = 55533818. Its totient is φ = 55533816.

The previous prime is 55533787. The next prime is 55533833. The reversal of 55533817 is 71833555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50466816 + 5067001 = 7104^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 55533817 - 2¹⁹ = 55009529 is a prime.

It is not a weakly prime, because it can be changed into another prime (55533847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766908 + 27766909.

It is an arithmetic number, because the mean of its divisors is an integer number (27766909).

Almost surely, 2^55533817 is an apocalyptic number.

It is an amenable number.

55533817 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533817 is an equidigital number, since it uses as much as digits as its factorization.

55533817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 55533817 is about 7452.1015156800. The cubic root of 55533817 is about 381.5216388233.

The spelling of 55533817 in words is "fifty-five million, five hundred thirty-three thousand, eight hundred seventeen".