55954321 has 2 divisors, whose sum is σ = 55954322. Its totient is φ = 55954320.

The previous prime is 55954291. The next prime is 55954333. The reversal of 55954321 is 12345955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41216400 + 14737921 = 6420^2 + 3839^2 .

It is a cyclic number.

It is not a de Polignac number, because 55954321 - 2⁵ = 55954289 is a prime.

It is not a weakly prime, because it can be changed into another prime (55954391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27977160 + 27977161.

It is an arithmetic number, because the mean of its divisors is an integer number (27977161).

Almost surely, 2^55954321 is an apocalyptic number.

It is an amenable number.

55954321 is a deficient number, since it is larger than the sum of its proper divisors (1).

55954321 is an equidigital number, since it uses as much as digits as its factorization.

55954321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 55954321 is about 7480.2620943387. The cubic root of 55954321 is about 382.4821835152.

The spelling of 55954321 in words is "fifty-five million, nine hundred fifty-four thousand, three hundred twenty-one".