47178061 has 4 divisors (see below), whose sum is σ = 53917792. Its totient is φ = 40438332.

The previous prime is 47178059. The next prime is 47178067. The reversal of 47178061 is 16087174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16087174 = 2 ⋅8043587.

It is a cyclic number.

It is not a de Polignac number, because 47178061 - 2¹ = 47178059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47178067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369855 + ... + 3369868.

It is an arithmetic number, because the mean of its divisors is an integer number (13479448).

Almost surely, 2^47178061 is an apocalyptic number.

It is an amenable number.

47178061 is a deficient number, since it is larger than the sum of its proper divisors (6739731).

47178061 is an equidigital number, since it uses as much as digits as its factorization.

47178061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6739730.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 47178061 is about 6868.6287568917. The cubic root of 47178061 is about 361.3377721216.

The spelling of 47178061 in words is "forty-seven million, one hundred seventy-eight thousand, sixty-one".