1201534533 has 8 divisors (see below), whose sum is σ = 1780051200. Its totient is φ = 801023004.

The previous prime is 1201534531. The next prime is 1201534547. The reversal of 1201534533 is 3354351021.

1201534533 is a `hidden beast` number, since 1 + 201 + 5 + 3 + 453 + 3 = 666.

It is not a de Polignac number, because 1201534533 - 2¹ = 1201534531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 44501279 = 1201534533 / (1 + 2 + 0 + 1 + 5 + 3 + 4 + 5 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 1201534497 and 1201534506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201534531) 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, 22250613 + ... + 22250666.

It is an arithmetic number, because the mean of its divisors is an integer number (222506400).

Almost surely, 2^1201534533 is an apocalyptic number.

It is an amenable number.

1201534533 is a deficient number, since it is larger than the sum of its proper divisors (578516667).

1201534533 is an equidigital number, since it uses as much as digits as its factorization.

1201534533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44501288 (or 44501282 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1201534533 is about 34663.1581509821. The cubic root of 1201534533 is about 1063.1113441941. Note that the first 3 decimals are identical.

Adding to 1201534533 its reverse (3354351021), we get a palindrome (4555885554).

The spelling of 1201534533 in words is "one billion, two hundred one million, five hundred thirty-four thousand, five hundred thirty-three".