1083156521 has 2 divisors, whose sum is σ = 1083156522. Its totient is φ = 1083156520.

The previous prime is 1083156511. The next prime is 1083156533. The reversal of 1083156521 is 1256513801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 886848400 + 196308121 = 29780^2 + 14011^2 .

It is an emirp because it is prime and its reverse (1256513801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1083156521 - 2¹⁴ = 1083140137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1083156511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541578260 + 541578261.

It is an arithmetic number, because the mean of its divisors is an integer number (541578261).

Almost surely, 2^1083156521 is an apocalyptic number.

It is an amenable number.

1083156521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1083156521 is an equidigital number, since it uses as much as digits as its factorization.

1083156521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1083156521 is about 32911.3433484566. The cubic root of 1083156521 is about 1026.9841467099.

The spelling of 1083156521 in words is "one billion, eighty-three million, one hundred fifty-six thousand, five hundred twenty-one".