1205533401 has 8 divisors (see below), whose sum is σ = 1607620704. Its totient is φ = 803567520.

The previous prime is 1205533387. The next prime is 1205533411. The reversal of 1205533401 is 1043355021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1205533401 - 2¹⁷ = 1205402329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1205533411) 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, 3891 + ... + 49256.

It is an arithmetic number, because the mean of its divisors is an integer number (200952588).

Almost surely, 2^1205533401 is an apocalyptic number.

It is an amenable number.

1205533401 is a deficient number, since it is larger than the sum of its proper divisors (402087303).

1205533401 is an equidigital number, since it uses as much as digits as its factorization.

1205533401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60711.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1205533401 is about 34720.7920560577. The cubic root of 1205533401 is about 1064.2894305729.

Adding to 1205533401 its reverse (1043355021), we get a palindrome (2248888422).

The spelling of 1205533401 in words is "one billion, two hundred five million, five hundred thirty-three thousand, four hundred one".