55880947 has 2 divisors, whose sum is σ = 55880948. Its totient is φ = 55880946.

The previous prime is 55880933. The next prime is 55880953. The reversal of 55880947 is 74908855.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55880947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55880897 and 55880906.

It is not a weakly prime, because it can be changed into another prime (55880917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27940473 + 27940474.

It is an arithmetic number, because the mean of its divisors is an integer number (27940474).

Almost surely, 2^55880947 is an apocalyptic number.

55880947 is a deficient number, since it is larger than the sum of its proper divisors (1).

55880947 is an equidigital number, since it uses as much as digits as its factorization.

55880947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 55880947 is about 7475.3559781458. The cubic root of 55880947 is about 382.3149249178.

The spelling of 55880947 in words is "fifty-five million, eight hundred eighty thousand, nine hundred forty-seven".