55243901 has 2 divisors, whose sum is σ = 55243902. Its totient is φ = 55243900.

The previous prime is 55243889. The next prime is 55243913. The reversal of 55243901 is 10934255.

It is a balanced prime because it is at equal distance from previous prime (55243889) and next prime (55243913).

It can be written as a sum of positive squares in only one way, i.e., 53071225 + 2172676 = 7285^2 + 1474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55243901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55243921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621950 + 27621951.

It is an arithmetic number, because the mean of its divisors is an integer number (27621951).

Almost surely, 2^55243901 is an apocalyptic number.

It is an amenable number.

55243901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55243901 is an equidigital number, since it uses as much as digits as its factorization.

55243901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55243901 is about 7432.6240991994. The cubic root of 55243901 is about 380.8565649803.

The spelling of 55243901 in words is "fifty-five million, two hundred forty-three thousand, nine hundred one".