55185703 has 2 divisors, whose sum is σ = 55185704. Its totient is φ = 55185702.

The previous prime is 55185659. The next prime is 55185721. The reversal of 55185703 is 30758155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55185703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55185103) 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, 27592851 + 27592852.

It is an arithmetic number, because the mean of its divisors is an integer number (27592852).

Almost surely, 2^55185703 is an apocalyptic number.

55185703 is a deficient number, since it is larger than the sum of its proper divisors (1).

55185703 is an equidigital number, since it uses as much as digits as its factorization.

55185703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 55185703 is about 7428.7080303374. The cubic root of 55185703 is about 380.7227771897.

The spelling of 55185703 in words is "fifty-five million, one hundred eighty-five thousand, seven hundred three".