1143251057 has 8 divisors (see below), whose sum is σ = 1232399784. Its totient is φ = 1054274688.

The previous prime is 1143251051. The next prime is 1143251089. The reversal of 1143251057 is 7501523411.

It can be written as a sum of positive squares in 4 ways, for example, as 97634161 + 1045616896 = 9881^2 + 32336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143251057 - 2²² = 1139056753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143251051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29138 + ... + 55995.

It is an arithmetic number, because the mean of its divisors is an integer number (154049973).

Almost surely, 2^1143251057 is an apocalyptic number.

It is an amenable number.

1143251057 is a deficient number, since it is larger than the sum of its proper divisors (89148727).

1143251057 is a wasteful number, since it uses less digits than its factorization.

1143251057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86179.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1143251057 is about 33811.9957559444. The cubic root of 1143251057 is about 1045.6360243738.

Adding to 1143251057 its reverse (7501523411), we get a palindrome (8644774468).

The spelling of 1143251057 in words is "one billion, one hundred forty-three million, two hundred fifty-one thousand, fifty-seven".