165187051 has 2 divisors, whose sum is σ = 165187052. Its totient is φ = 165187050.

The previous prime is 165187039. The next prime is 165187063. The reversal of 165187051 is 150781561.

It is a balanced prime because it is at equal distance from previous prime (165187039) and next prime (165187063).

It is a cyclic number.

It is not a de Polignac number, because 165187051 - 2⁵ = 165187019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165186998 and 165187016.

It is not a weakly prime, because it can be changed into another prime (165187021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82593525 + 82593526.

It is an arithmetic number, because the mean of its divisors is an integer number (82593526).

Almost surely, 2^165187051 is an apocalyptic number.

165187051 is a deficient number, since it is larger than the sum of its proper divisors (1).

165187051 is an equidigital number, since it uses as much as digits as its factorization.

165187051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The square root of 165187051 is about 12852.5114666356. The cubic root of 165187051 is about 548.6878372861.

The spelling of 165187051 in words is "one hundred sixty-five million, one hundred eighty-seven thousand, fifty-one".