55472947 has 2 divisors, whose sum is σ = 55472948. Its totient is φ = 55472946.

The previous prime is 55472917. The next prime is 55472957. The reversal of 55472947 is 74927455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55472947 is a prime.

It is not a weakly prime, because it can be changed into another prime (55472917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27736473 + 27736474.

It is an arithmetic number, because the mean of its divisors is an integer number (27736474).

Almost surely, 2^55472947 is an apocalyptic number.

55472947 is a deficient number, since it is larger than the sum of its proper divisors (1).

55472947 is an equidigital number, since it uses as much as digits as its factorization.

55472947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 55472947 is about 7448.0163130863. The cubic root of 55472947 is about 381.3821939860.

The spelling of 55472947 in words is "fifty-five million, four hundred seventy-two thousand, nine hundred forty-seven".