1145055251 has 2 divisors, whose sum is σ = 1145055252. Its totient is φ = 1145055250.

The previous prime is 1145055229. The next prime is 1145055287. The reversal of 1145055251 is 1525505411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145055251 - 2³⁰ = 71313427 is a prime.

It is a super-2 number, since 2×1145055251² = 2622303055685346002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145055551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572527625 + 572527626.

It is an arithmetic number, because the mean of its divisors is an integer number (572527626).

Almost surely, 2^1145055251 is an apocalyptic number.

1145055251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145055251 is an equidigital number, since it uses as much as digits as its factorization.

1145055251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 1145055251 is about 33838.6650298146. The cubic root of 1145055251 is about 1046.1857836779.

The spelling of 1145055251 in words is "one billion, one hundred forty-five million, fifty-five thousand, two hundred fifty-one".