8051293421 has 2 divisors, whose sum is σ = 8051293422. Its totient is φ = 8051293420.

The previous prime is 8051293409. The next prime is 8051293423. The reversal of 8051293421 is 1243921508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6600750025 + 1450543396 = 81245^2 + 38086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8051293421 is a prime.

Together with 8051293423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8051293423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4025646710 + 4025646711.

It is an arithmetic number, because the mean of its divisors is an integer number (4025646711).

Almost surely, 2^8051293421 is an apocalyptic number.

It is an amenable number.

8051293421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8051293421 is an equidigital number, since it uses as much as digits as its factorization.

8051293421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 8051293421 is about 89728.9998885533. Note that the first 3 decimals coincide. The cubic root of 8051293421 is about 2004.2653486836.

The spelling of 8051293421 in words is "eight billion, fifty-one million, two hundred ninety-three thousand, four hundred twenty-one".