51606102157 has 2 divisors, whose sum is σ = 51606102158. Its totient is φ = 51606102156.

The previous prime is 51606102083. The next prime is 51606102169. The reversal of 51606102157 is 75120160615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32811337321 + 18794764836 = 181139^2 + 137094^2 .

It is a cyclic number.

It is not a de Polignac number, because 51606102157 - 2⁷ = 51606102029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51606102187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25803051078 + 25803051079.

It is an arithmetic number, because the mean of its divisors is an integer number (25803051079).

Almost surely, 2^51606102157 is an apocalyptic number.

It is an amenable number.

51606102157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51606102157 is an equidigital number, since it uses as much as digits as its factorization.

51606102157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 51606102157 in words is "fifty-one billion, six hundred six million, one hundred two thousand, one hundred fifty-seven".