47377845 has 16 divisors (see below), whose sum is σ = 84227520. Its totient is φ = 25268112.

The previous prime is 47377843. The next prime is 47377859. The reversal of 47377845 is 54877374.

It is not a de Polignac number, because 47377845 - 2¹ = 47377843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47377845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47377843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175339 + ... + 175608.

It is an arithmetic number, because the mean of its divisors is an integer number (5264220).

Almost surely, 2^47377845 is an apocalyptic number.

47377845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47377845 is a deficient number, since it is larger than the sum of its proper divisors (36849675).

47377845 is a wasteful number, since it uses less digits than its factorization.

47377845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350961 (or 350955 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The square root of 47377845 is about 6883.1566159721. The cubic root of 47377845 is about 361.8471038122.

The spelling of 47377845 in words is "forty-seven million, three hundred seventy-seven thousand, eight hundred forty-five".