51529199 has 2 divisors, whose sum is σ = 51529200. Its totient is φ = 51529198.

The previous prime is 51529157. The next prime is 51529217. The reversal of 51529199 is 99192515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51529199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51529109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25764599 + 25764600.

It is an arithmetic number, because the mean of its divisors is an integer number (25764600).

Almost surely, 2^51529199 is an apocalyptic number.

51529199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51529199 is an equidigital number, since it uses as much as digits as its factorization.

51529199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 41.

The square root of 51529199 is about 7178.3841496537. The cubic root of 51529199 is about 372.1212437685.

The spelling of 51529199 in words is "fifty-one million, five hundred twenty-nine thousand, one hundred ninety-nine".