133501973 has 8 divisors (see below), whose sum is σ = 147141120. Its totient is φ = 120113280.

The previous prime is 133501943. The next prime is 133501981. The reversal of 133501973 is 379105331.

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

It is a cyclic number.

It is not a de Polignac number, because 133501973 - 2⁶ = 133501909 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 (133501943) 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, 61493 + ... + 63626.

It is an arithmetic number, because the mean of its divisors is an integer number (18392640).

Almost surely, 2^133501973 is an apocalyptic number.

It is an amenable number.

133501973 is a deficient number, since it is larger than the sum of its proper divisors (13639147).

133501973 is a wasteful number, since it uses less digits than its factorization.

133501973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125227.

The product of its (nonzero) digits is 8505, while the sum is 32.

The square root of 133501973 is about 11554.3053880361. The cubic root of 133501973 is about 511.0882477993.

The spelling of 133501973 in words is "one hundred thirty-three million, five hundred one thousand, nine hundred seventy-three".