1253054981 has 2 divisors, whose sum is σ = 1253054982. Its totient is φ = 1253054980.

The previous prime is 1253054977. The next prime is 1253055017. The reversal of 1253054981 is 1894503521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628504900 + 624550081 = 25070^2 + 24991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253054981 - 2² = 1253054977 is a prime.

It is a super-2 number, since 2×1253054981² = 3140293570817820722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253054911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626527490 + 626527491.

It is an arithmetic number, because the mean of its divisors is an integer number (626527491).

Almost surely, 2^1253054981 is an apocalyptic number.

It is an amenable number.

1253054981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253054981 is an equidigital number, since it uses as much as digits as its factorization.

1253054981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1253054981 is about 35398.5166497129. The cubic root of 1253054981 is about 1078.0941986703.

The spelling of 1253054981 in words is "one billion, two hundred fifty-three million, fifty-four thousand, nine hundred eighty-one".