1043155657 has 2 divisors, whose sum is σ = 1043155658. Its totient is φ = 1043155656.

The previous prime is 1043155637. The next prime is 1043155669. The reversal of 1043155657 is 7565513401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 933241401 + 109914256 = 30549^2 + 10484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043155657 is a prime.

It is a super-2 number, since 2×1043155657² = 2176347449462203298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1043155627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521577828 + 521577829.

It is an arithmetic number, because the mean of its divisors is an integer number (521577829).

Almost surely, 2^1043155657 is an apocalyptic number.

It is an amenable number.

1043155657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043155657 is an equidigital number, since it uses as much as digits as its factorization.

1043155657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 1043155657 is about 32297.9203200454. The cubic root of 1043155657 is about 1014.1831074363.

The spelling of 1043155657 in words is "one billion, forty-three million, one hundred fifty-five thousand, six hundred fifty-seven".