1075047521 has 2 divisors, whose sum is σ = 1075047522. Its totient is φ = 1075047520.

The previous prime is 1075047503. The next prime is 1075047529. The reversal of 1075047521 is 1257405701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1045616896 + 29430625 = 32336^2 + 5425^2 .

It is an emirp because it is prime and its reverse (1257405701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1075047521 - 2¹⁴ = 1075031137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1075047529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537523760 + 537523761.

It is an arithmetic number, because the mean of its divisors is an integer number (537523761).

Almost surely, 2^1075047521 is an apocalyptic number.

It is an amenable number.

1075047521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075047521 is an equidigital number, since it uses as much as digits as its factorization.

1075047521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 1075047521 is about 32787.9173019574. The cubic root of 1075047521 is about 1024.4149017664.

The spelling of 1075047521 in words is "one billion, seventy-five million, forty-seven thousand, five hundred twenty-one".