51597419 has 2 divisors, whose sum is σ = 51597420. Its totient is φ = 51597418.

The previous prime is 51597391. The next prime is 51597421. The reversal of 51597419 is 91479515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51597419 - 2¹² = 51593323 is a prime.

It is a super-2 number, since 2×51597419² = 5324587294923122, which contains 22 as substring.

Together with 51597421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51597449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25798709 + 25798710.

It is an arithmetic number, because the mean of its divisors is an integer number (25798710).

Almost surely, 2^51597419 is an apocalyptic number.

51597419 is a deficient number, since it is larger than the sum of its proper divisors (1).

51597419 is an equidigital number, since it uses as much as digits as its factorization.

51597419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 41.

The square root of 51597419 is about 7183.1343437249. The cubic root of 51597419 is about 372.2853896443.

The spelling of 51597419 in words is "fifty-one million, five hundred ninety-seven thousand, four hundred nineteen".