55960321 has 2 divisors, whose sum is σ = 55960322. Its totient is φ = 55960320.

The previous prime is 55960291. The next prime is 55960349. The reversal of 55960321 is 12306955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45968400 + 9991921 = 6780^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 55960321 - 2¹⁹ = 55436033 is a prime.

It is not a weakly prime, because it can be changed into another prime (55960381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27980160 + 27980161.

It is an arithmetic number, because the mean of its divisors is an integer number (27980161).

Almost surely, 2^55960321 is an apocalyptic number.

It is an amenable number.

55960321 is a deficient number, since it is larger than the sum of its proper divisors (1).

55960321 is an equidigital number, since it uses as much as digits as its factorization.

55960321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 55960321 is about 7480.6631390539. The cubic root of 55960321 is about 382.4958542561.

The spelling of 55960321 in words is "fifty-five million, nine hundred sixty thousand, three hundred twenty-one".