5173737421 has 2 divisors, whose sum is σ = 5173737422. Its totient is φ = 5173737420.

The previous prime is 5173737383. The next prime is 5173737427. The reversal of 5173737421 is 1247373715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4423580100 + 750157321 = 66510^2 + 27389^2 .

It is a cyclic number.

It is not a de Polignac number, because 5173737421 - 2²⁵ = 5140182989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5173737427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586868710 + 2586868711.

It is an arithmetic number, because the mean of its divisors is an integer number (2586868711).

Almost surely, 2^5173737421 is an apocalyptic number.

It is an amenable number.

5173737421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5173737421 is an equidigital number, since it uses as much as digits as its factorization.

5173737421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 40.

The square root of 5173737421 is about 71928.6967836899. The cubic root of 5173737421 is about 1729.5566619889.

The spelling of 5173737421 in words is "five billion, one hundred seventy-three million, seven hundred thirty-seven thousand, four hundred twenty-one".