51933397 has 2 divisors, whose sum is σ = 51933398. Its totient is φ = 51933396.

The previous prime is 51933373. The next prime is 51933407. The reversal of 51933397 is 79333915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45037521 + 6895876 = 6711^2 + 2626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51933397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51933367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25966698 + 25966699.

It is an arithmetic number, because the mean of its divisors is an integer number (25966699).

Almost surely, 2^51933397 is an apocalyptic number.

It is an amenable number.

51933397 is a deficient number, since it is larger than the sum of its proper divisors (1).

51933397 is an equidigital number, since it uses as much as digits as its factorization.

51933397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76545, while the sum is 40.

The square root of 51933397 is about 7206.4829840915. The cubic root of 51933397 is about 373.0916909045.

The spelling of 51933397 in words is "fifty-one million, nine hundred thirty-three thousand, three hundred ninety-seven".