55304591 has 2 divisors, whose sum is σ = 55304592. Its totient is φ = 55304590.

The previous prime is 55304569. The next prime is 55304597. The reversal of 55304591 is 19540355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55304591 - 2²² = 51110287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55304597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27652295 + 27652296.

It is an arithmetic number, because the mean of its divisors is an integer number (27652296).

Almost surely, 2^55304591 is an apocalyptic number.

55304591 is a deficient number, since it is larger than the sum of its proper divisors (1).

55304591 is an equidigital number, since it uses as much as digits as its factorization.

55304591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 55304591 is about 7436.7056550599. The cubic root of 55304591 is about 380.9959814311.

The spelling of 55304591 in words is "fifty-five million, three hundred four thousand, five hundred ninety-one".