190052021 has 2 divisors, whose sum is σ = 190052022. Its totient is φ = 190052020.

The previous prime is 190051913. The next prime is 190052047. The reversal of 190052021 is 120250091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166771396 + 23280625 = 12914^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 190052021 - 2¹⁰ = 190050997 is a prime.

It is a super-2 number, since 2×190052021² = 72239541372368882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190051984 and 190052002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190052081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95026010 + 95026011.

It is an arithmetic number, because the mean of its divisors is an integer number (95026011).

Almost surely, 2^190052021 is an apocalyptic number.

It is an amenable number.

190052021 is a deficient number, since it is larger than the sum of its proper divisors (1).

190052021 is an equidigital number, since it uses as much as digits as its factorization.

190052021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 190052021 is about 13785.9356229456. The cubic root of 190052021 is about 574.9421703656.

The spelling of 190052021 in words is "one hundred ninety million, fifty-two thousand, twenty-one".