51535207 has 2 divisors, whose sum is σ = 51535208. Its totient is φ = 51535206.

The previous prime is 51535189. The next prime is 51535213. The reversal of 51535207 is 70253515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51535207 - 2⁷ = 51535079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51535217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767603 + 25767604.

It is an arithmetic number, because the mean of its divisors is an integer number (25767604).

Almost surely, 2^51535207 is an apocalyptic number.

51535207 is a deficient number, since it is larger than the sum of its proper divisors (1).

51535207 is an equidigital number, since it uses as much as digits as its factorization.

51535207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 51535207 is about 7178.8026160356. The cubic root of 51535207 is about 372.1357055855.

The spelling of 51535207 in words is "fifty-one million, five hundred thirty-five thousand, two hundred seven".