51430349 has 2 divisors, whose sum is σ = 51430350. Its totient is φ = 51430348.

The previous prime is 51430319. The next prime is 51430363. The reversal of 51430349 is 94303415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38217124 + 13213225 = 6182^2 + 3635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51430349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51430319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715174 + 25715175.

It is an arithmetic number, because the mean of its divisors is an integer number (25715175).

Almost surely, 2^51430349 is an apocalyptic number.

It is an amenable number.

51430349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51430349 is an equidigital number, since it uses as much as digits as its factorization.

51430349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 51430349 is about 7171.4955901820. The cubic root of 51430349 is about 371.8831410218.

The spelling of 51430349 in words is "fifty-one million, four hundred thirty thousand, three hundred forty-nine".