51622199 has 2 divisors, whose sum is σ = 51622200. Its totient is φ = 51622198.

The previous prime is 51622187. The next prime is 51622213. The reversal of 51622199 is 99122615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51622199 - 2¹⁶ = 51556663 is a prime.

It is a Sophie Germain 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 (51622399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25811099 + 25811100.

It is an arithmetic number, because the mean of its divisors is an integer number (25811100).

Almost surely, 2^51622199 is an apocalyptic number.

51622199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51622199 is an equidigital number, since it uses as much as digits as its factorization.

51622199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 51622199 is about 7184.8590104469. The cubic root of 51622199 is about 372.3449776089.

The spelling of 51622199 in words is "fifty-one million, six hundred twenty-two thousand, one hundred ninety-nine".