133159401 has 24 divisors (see below), whose sum is σ = 198856320. Its totient is φ = 85816800.

The previous prime is 133159399. The next prime is 133159421. The reversal of 133159401 is 104951331.

It is not a de Polignac number, because 133159401 - 2¹ = 133159399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133159421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30336 + ... + 34446.

It is an arithmetic number, because the mean of its divisors is an integer number (8285680).

Almost surely, 2^133159401 is an apocalyptic number.

It is an amenable number.

133159401 is a deficient number, since it is larger than the sum of its proper divisors (65696919).

133159401 is a wasteful number, since it uses less digits than its factorization.

133159401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237 (or 4234 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 133159401 is about 11539.4714350355. The cubic root of 133159401 is about 510.6507149515.

The spelling of 133159401 in words is "one hundred thirty-three million, one hundred fifty-nine thousand, four hundred one".