55397347 has 2 divisors, whose sum is σ = 55397348. Its totient is φ = 55397346.

The previous prime is 55397311. The next prime is 55397351. The reversal of 55397347 is 74379355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55397347 is a prime.

It is not a weakly prime, because it can be changed into another prime (55397357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27698673 + 27698674.

It is an arithmetic number, because the mean of its divisors is an integer number (27698674).

Almost surely, 2^55397347 is an apocalyptic number.

55397347 is a deficient number, since it is larger than the sum of its proper divisors (1).

55397347 is an equidigital number, since it uses as much as digits as its factorization.

55397347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 43.

The square root of 55397347 is about 7442.9394059068. The cubic root of 55397347 is about 381.2088626401.

The spelling of 55397347 in words is "fifty-five million, three hundred ninety-seven thousand, three hundred forty-seven".