47249955 has 12 divisors (see below), whose sum is σ = 81900000. Its totient is φ = 25199952.

The previous prime is 47249947. The next prime is 47249959. The reversal of 47249955 is 55994274.

47249955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47249955 - 2³ = 47249947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1049999 = 47249955 / (4 + 7 + 2 + 4 + 9 + 9 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 47249955.

It is not an unprimeable number, because it can be changed into a prime (47249959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524955 + ... + 525044.

It is an arithmetic number, because the mean of its divisors is an integer number (6825000).

Almost surely, 2^47249955 is an apocalyptic number.

47249955 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47249955 is a deficient number, since it is larger than the sum of its proper divisors (34650045).

47249955 is a wasteful number, since it uses less digits than its factorization.

47249955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050010 (or 1050007 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 47249955 is about 6873.8602691646. The cubic root of 47249955 is about 361.5212248576.

The spelling of 47249955 in words is "forty-seven million, two hundred forty-nine thousand, nine hundred fifty-five".