1227252533 has 8 divisors (see below), whose sum is σ = 1324529976. Its totient is φ = 1130385600.

The previous prime is 1227252529. The next prime is 1227252571. The reversal of 1227252533 is 3352527221.

It can be written as a sum of positive squares in 4 ways, for example, as 39967684 + 1187284849 = 6322^2 + 34457^2 .

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 1227252533 - 2² = 1227252529 is a prime.

It is a super-2 number, since 2×1227252533² = 3012297559509832178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227252533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227252133) 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, 96398 + ... + 108383.

It is an arithmetic number, because the mean of its divisors is an integer number (165566247).

Almost surely, 2^1227252533 is an apocalyptic number.

1227252533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1227252533 is a deficient number, since it is larger than the sum of its proper divisors (97277443).

1227252533 is a wasteful number, since it uses less digits than its factorization.

1227252533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205255.

The product of its digits is 25200, while the sum is 32.

The square root of 1227252533 is about 35032.1642637163. The cubic root of 1227252533 is about 1070.6429108600.

Adding to 1227252533 its reverse (3352527221), we get a palindrome (4579779754).

The spelling of 1227252533 in words is "one billion, two hundred twenty-seven million, two hundred fifty-two thousand, five hundred thirty-three".