51890351 has 2 divisors, whose sum is σ = 51890352. Its totient is φ = 51890350.

The previous prime is 51890299. The next prime is 51890357. The reversal of 51890351 is 15309815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51890351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51890357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25945175 + 25945176.

It is an arithmetic number, because the mean of its divisors is an integer number (25945176).

Almost surely, 2^51890351 is an apocalyptic number.

51890351 is a deficient number, since it is larger than the sum of its proper divisors (1).

51890351 is an equidigital number, since it uses as much as digits as its factorization.

51890351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 51890351 is about 7203.4957485932. The cubic root of 51890351 is about 372.9885809910.

The spelling of 51890351 in words is "fifty-one million, eight hundred ninety thousand, three hundred fifty-one".