51461197 has 2 divisors, whose sum is σ = 51461198. Its totient is φ = 51461196.

The previous prime is 51461171. The next prime is 51461203. The reversal of 51461197 is 79116415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25918281 + 25542916 = 5091^2 + 5054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51461197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51401197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25730598 + 25730599.

It is an arithmetic number, because the mean of its divisors is an integer number (25730599).

Almost surely, 2^51461197 is an apocalyptic number.

It is an amenable number.

51461197 is a deficient number, since it is larger than the sum of its proper divisors (1).

51461197 is an equidigital number, since it uses as much as digits as its factorization.

51461197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 51461197 is about 7173.6460046478. The cubic root of 51461197 is about 371.9574781820.

The spelling of 51461197 in words is "fifty-one million, four hundred sixty-one thousand, one hundred ninety-seven".