55429901 has 2 divisors, whose sum is σ = 55429902. Its totient is φ = 55429900.

The previous prime is 55429883. The next prime is 55429921. The reversal of 55429901 is 10992455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43903876 + 11526025 = 6626^2 + 3395^2 .

It is a cyclic number.

It is not a de Polignac number, because 55429901 - 2¹⁸ = 55167757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55429921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27714950 + 27714951.

It is an arithmetic number, because the mean of its divisors is an integer number (27714951).

Almost surely, 2^55429901 is an apocalyptic number.

It is an amenable number.

55429901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55429901 is an equidigital number, since it uses as much as digits as its factorization.

55429901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 55429901 is about 7445.1259895317. The cubic root of 55429901 is about 381.2835199051.

The spelling of 55429901 in words is "fifty-five million, four hundred twenty-nine thousand, nine hundred one".