53479421 has 2 divisors, whose sum is σ = 53479422. Its totient is φ = 53479420.

The previous prime is 53479417. The next prime is 53479453. The reversal of 53479421 is 12497435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31483321 + 21996100 = 5611^2 + 4690^2 .

It is a cyclic number.

It is not a de Polignac number, because 53479421 - 2² = 53479417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53470421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26739710 + 26739711.

It is an arithmetic number, because the mean of its divisors is an integer number (26739711).

Almost surely, 2^53479421 is an apocalyptic number.

It is an amenable number.

53479421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53479421 is an equidigital number, since it uses as much as digits as its factorization.

53479421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 53479421 is about 7312.9625323804. The cubic root of 53479421 is about 376.7577826230.

The spelling of 53479421 in words is "fifty-three million, four hundred seventy-nine thousand, four hundred twenty-one".