55930393 has 2 divisors, whose sum is σ = 55930394. Its totient is φ = 55930392.

The previous prime is 55930373. The next prime is 55930397. The reversal of 55930393 is 39303955.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49519369 + 6411024 = 7037^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 55930393 - 2¹³ = 55922201 is a prime.

It is a super-2 number, since 2×55930393² = 6256417722268898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55930397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27965196 + 27965197.

It is an arithmetic number, because the mean of its divisors is an integer number (27965197).

Almost surely, 2^55930393 is an apocalyptic number.

It is an amenable number.

55930393 is a deficient number, since it is larger than the sum of its proper divisors (1).

55930393 is an equidigital number, since it uses as much as digits as its factorization.

55930393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54675, while the sum is 37.

The square root of 55930393 is about 7478.6625141131. The cubic root of 55930393 is about 382.4276548782.

The spelling of 55930393 in words is "fifty-five million, nine hundred thirty thousand, three hundred ninety-three".