1214521547 has 2 divisors, whose sum is σ = 1214521548. Its totient is φ = 1214521546.

The previous prime is 1214521493. The next prime is 1214521573. The reversal of 1214521547 is 7451254121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7451254121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1214521547 - 2¹⁴ = 1214505163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214523547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607260773 + 607260774.

It is an arithmetic number, because the mean of its divisors is an integer number (607260774).

Almost surely, 2^1214521547 is an apocalyptic number.

1214521547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214521547 is an equidigital number, since it uses as much as digits as its factorization.

1214521547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 32.

The square root of 1214521547 is about 34849.9863271135. The cubic root of 1214521547 is about 1066.9279065976.

Adding to 1214521547 its reverse (7451254121), we get a palindrome (8665775668).

The spelling of 1214521547 in words is "one billion, two hundred fourteen million, five hundred twenty-one thousand, five hundred forty-seven".