51799897 has 2 divisors, whose sum is σ = 51799898. Its totient is φ = 51799896.

The previous prime is 51799883. The next prime is 51799903. The reversal of 51799897 is 79899715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 24561936 = 5219^2 + 4956^2 .

It is a cyclic number.

It is not a de Polignac number, because 51799897 - 2¹¹ = 51797849 is a prime.

It is not a weakly prime, because it can be changed into another prime (51799807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25899948 + 25899949.

It is an arithmetic number, because the mean of its divisors is an integer number (25899949).

Almost surely, 2^51799897 is an apocalyptic number.

It is an amenable number.

51799897 is a deficient number, since it is larger than the sum of its proper divisors (1).

51799897 is an equidigital number, since it uses as much as digits as its factorization.

51799897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 55.

The square root of 51799897 is about 7197.2145306361. The cubic root of 51799897 is about 372.7717267243.

The spelling of 51799897 in words is "fifty-one million, seven hundred ninety-nine thousand, eight hundred ninety-seven".