133804901 has 6 divisors (see below), whose sum is σ = 135247206. Its totient is φ = 132365000.

The previous prime is 133804883. The next prime is 133804921. The reversal of 133804901 is 109408331.

It can be written as a sum of positive squares in only one way, i.e., 132480100 + 1324801 = 11510^2 + 1151^2 .

It is not a de Polignac number, because 133804901 - 2¹⁴ = 133788517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133804921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115676 + ... + 116826.

It is an arithmetic number, because the mean of its divisors is an integer number (22541201).

Almost surely, 2^133804901 is an apocalyptic number.

It is an amenable number.

133804901 is a deficient number, since it is larger than the sum of its proper divisors (1442305).

133804901 is an frugal number, since it uses more digits than its factorization.

133804901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 133804901 is about 11567.4068399101. The cubic root of 133804901 is about 511.4745242022.

It can be divided in two parts, 13380 and 4901, that added together give a palindrome (18281).

The spelling of 133804901 in words is "one hundred thirty-three million, eight hundred four thousand, nine hundred one".