47420505 has 48 divisors (see below), whose sum is σ = 92695680. Its totient is φ = 22983840.

The previous prime is 47420491. The next prime is 47420507. The reversal of 47420505 is 50502474.

47420505 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 47420505 - 2⁶ = 47420441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (47420507) 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 47 ways as a sum of consecutive naturals, for example, 14884 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (1931160).

Almost surely, 2^47420505 is an apocalyptic number.

47420505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47420505 is a deficient number, since it is larger than the sum of its proper divisors (45275175).

47420505 is a wasteful number, since it uses less digits than its factorization.

47420505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 47420505 is about 6886.2547876186. The cubic root of 47420505 is about 361.9556761254.

Adding to 47420505 its reverse (50502474), we get a palindrome (97922979).

The spelling of 47420505 in words is "forty-seven million, four hundred twenty thousand, five hundred five".