190172051 has 2 divisors, whose sum is σ = 190172052. Its totient is φ = 190172050.

The previous prime is 190172041. The next prime is 190172077. The reversal of 190172051 is 150271091.

It is an a-pointer prime, because the next prime (190172077) can be obtained adding 190172051 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190172051 - 2⁶ = 190171987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190172051.

It is not a weakly prime, because it can be changed into another prime (190172041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95086025 + 95086026.

It is an arithmetic number, because the mean of its divisors is an integer number (95086026).

Almost surely, 2^190172051 is an apocalyptic number.

190172051 is a deficient number, since it is larger than the sum of its proper divisors (1).

190172051 is an equidigital number, since it uses as much as digits as its factorization.

190172051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 190172051 is about 13790.2882856016. The cubic root of 190172051 is about 575.0631824711.

The spelling of 190172051 in words is "one hundred ninety million, one hundred seventy-two thousand, fifty-one".