55901393 has 2 divisors, whose sum is σ = 55901394. Its totient is φ = 55901392.

The previous prime is 55901387. The next prime is 55901407. The reversal of 55901393 is 39310955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54346384 + 1555009 = 7372^2 + 1247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55901393 is a prime.

It is not a weakly prime, because it can be changed into another prime (55901893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27950696 + 27950697.

It is an arithmetic number, because the mean of its divisors is an integer number (27950697).

Almost surely, 2^55901393 is an apocalyptic number.

It is an amenable number.

55901393 is a deficient number, since it is larger than the sum of its proper divisors (1).

55901393 is an equidigital number, since it uses as much as digits as its factorization.

55901393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 55901393 is about 7476.7234133676. The cubic root of 55901393 is about 382.3615469969.

The spelling of 55901393 in words is "fifty-five million, nine hundred one thousand, three hundred ninety-three".