133751801 has 24 divisors (see below), whose sum is σ = 149128320. Its totient is φ = 119814912.

The previous prime is 133751797. The next prime is 133751861. The reversal of 133751801 is 108157331.

It is not a de Polignac number, because 133751801 - 2² = 133751797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133751861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 583955 + ... + 584183.

It is an arithmetic number, because the mean of its divisors is an integer number (6213680).

Almost surely, 2^133751801 is an apocalyptic number.

It is an amenable number.

133751801 is a deficient number, since it is larger than the sum of its proper divisors (15376519).

133751801 is a wasteful number, since it uses less digits than its factorization.

133751801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 133751801 is about 11565.1113699782. Note that the first 3 decimals coincide. The cubic root of 133751801 is about 511.4068563004.

The spelling of 133751801 in words is "one hundred thirty-three million, seven hundred fifty-one thousand, eight hundred one".