1020132251 has 2 divisors, whose sum is σ = 1020132252. Its totient is φ = 1020132250.

The previous prime is 1020132161. The next prime is 1020132263. The reversal of 1020132251 is 1522310201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020132251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020132851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510066125 + 510066126.

It is an arithmetic number, because the mean of its divisors is an integer number (510066126).

Almost surely, 2^1020132251 is an apocalyptic number.

1020132251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020132251 is an equidigital number, since it uses as much as digits as its factorization.

1020132251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1020132251 is about 31939.5092479518. The cubic root of 1020132251 is about 1006.6662131898. Note that the first 3 decimals are identical.

Adding to 1020132251 its reverse (1522310201), we get a palindrome (2542442452).

The spelling of 1020132251 in words is "one billion, twenty million, one hundred thirty-two thousand, two hundred fifty-one".