47770213 has 4 divisors (see below), whose sum is σ = 47841868. Its totient is φ = 47698560.

The previous prime is 47770211. The next prime is 47770243. The reversal of 47770213 is 31207774.

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 35259844 + 12510369 = 5938^2 + 3537^2 .

It is a cyclic number.

It is not a de Polignac number, because 47770213 - 2¹ = 47770211 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 (47770211) 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, 34818 + ... + 36163.

It is an arithmetic number, because the mean of its divisors is an integer number (11960467).

Almost surely, 2^47770213 is an apocalyptic number.

It is an amenable number.

47770213 is a deficient number, since it is larger than the sum of its proper divisors (71655).

47770213 is an equidigital number, since it uses as much as digits as its factorization.

47770213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71654.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 47770213 is about 6911.5998871462. The cubic root of 47770213 is about 362.8432591622.

Adding to 47770213 its reverse (31207774), we get a palindrome (78977987).

It can be divided in two parts, 477702 and 13, that multiplied together give a palindrome (6210126).

The spelling of 47770213 in words is "forty-seven million, seven hundred seventy thousand, two hundred thirteen".