190190251 has 2 divisors, whose sum is σ = 190190252. Its totient is φ = 190190250.

The previous prime is 190190227. The next prime is 190190257. The reversal of 190190251 is 152091091.

190190251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (152091091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190190251 - 2⁵ = 190190219 is a prime.

It is not a weakly prime, because it can be changed into another prime (190190257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95095125 + 95095126.

It is an arithmetic number, because the mean of its divisors is an integer number (95095126).

Almost surely, 2^190190251 is an apocalyptic number.

190190251 is a deficient number, since it is larger than the sum of its proper divisors (1).

190190251 is an equidigital number, since it uses as much as digits as its factorization.

190190251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 190190251 is about 13790.9481544961. The cubic root of 190190251 is about 575.0815269404.

The spelling of 190190251 in words is "one hundred ninety million, one hundred ninety thousand, two hundred fifty-one".