55949147 has 2 divisors, whose sum is σ = 55949148. Its totient is φ = 55949146.

The previous prime is 55949119. The next prime is 55949189. The reversal of 55949147 is 74194955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55949147 - 2⁶ = 55949083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55949098 and 55949107.

It is not a weakly prime, because it can be changed into another prime (55949107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27974573 + 27974574.

It is an arithmetic number, because the mean of its divisors is an integer number (27974574).

Almost surely, 2^55949147 is an apocalyptic number.

55949147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55949147 is an equidigital number, since it uses as much as digits as its factorization.

55949147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 55949147 is about 7479.9162428466. The cubic root of 55949147 is about 382.4703939948.

It can be divided in two parts, 5594 and 9147, that added together give a palindrome (14741).

The spelling of 55949147 in words is "fifty-five million, nine hundred forty-nine thousand, one hundred forty-seven".