47372405 has 4 divisors (see below), whose sum is σ = 56846892. Its totient is φ = 37897920.

The previous prime is 47372383. The next prime is 47372411. The reversal of 47372405 is 50427374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29343889 + 18028516 = 5417^2 + 4246^2 .

It is not a de Polignac number, because 47372405 - 2¹⁴ = 47356021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4737236 + ... + 4737245.

It is an arithmetic number, because the mean of its divisors is an integer number (14211723).

Almost surely, 2^47372405 is an apocalyptic number.

It is an amenable number.

47372405 is a deficient number, since it is larger than the sum of its proper divisors (9474487).

47372405 is an equidigital number, since it uses as much as digits as its factorization.

47372405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474486.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 47372405 is about 6882.7614370978. The cubic root of 47372405 is about 361.8332539942.

Adding to 47372405 its reverse (50427374), we get a palindrome (97799779).

The spelling of 47372405 in words is "forty-seven million, three hundred seventy-two thousand, four hundred five".