1145055397 has 2 divisors, whose sum is σ = 1145055398. Its totient is φ = 1145055396.

The previous prime is 1145055323. The next prime is 1145055469. The reversal of 1145055397 is 7935505411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770284516 + 374770881 = 27754^2 + 19359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145055397 - 2²³ = 1136666789 is a prime.

It is a super-2 number, since 2×1145055397² = 2622303724397655218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145055097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572527698 + 572527699.

It is an arithmetic number, because the mean of its divisors is an integer number (572527699).

Almost surely, 2^1145055397 is an apocalyptic number.

It is an amenable number.

1145055397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145055397 is an equidigital number, since it uses as much as digits as its factorization.

1145055397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 1145055397 is about 33838.6671871101. The cubic root of 1145055397 is about 1046.1858281425.

The spelling of 1145055397 in words is "one billion, one hundred forty-five million, fifty-five thousand, three hundred ninety-seven".