47610821 has 2 divisors, whose sum is σ = 47610822. Its totient is φ = 47610820.

The previous prime is 47610809. The next prime is 47610841. The reversal of 47610821 is 12801674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 9541921 = 6170^2 + 3089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47610821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47610841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23805410 + 23805411.

It is an arithmetic number, because the mean of its divisors is an integer number (23805411).

Almost surely, 2^47610821 is an apocalyptic number.

It is an amenable number.

47610821 is a deficient number, since it is larger than the sum of its proper divisors (1).

47610821 is an equidigital number, since it uses as much as digits as its factorization.

47610821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 47610821 is about 6900.0594924971. The cubic root of 47610821 is about 362.4392503827.

The spelling of 47610821 in words is "forty-seven million, six hundred ten thousand, eight hundred twenty-one".