133718501 has 12 divisors (see below), whose sum is σ = 155744748. Its totient is φ = 114472512.

The previous prime is 133718483. The next prime is 133718513. The reversal of 133718501 is 105817331.

It can be written as a sum of positive squares in 2 ways, for example, as 40132225 + 93586276 = 6335^2 + 9674^2 .

It is a de Polignac number, because none of the positive numbers 2^k-133718501 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 (133718521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61505 + ... + 63641.

It is an arithmetic number, because the mean of its divisors is an integer number (12978729).

Almost surely, 2^133718501 is an apocalyptic number.

It is an amenable number.

133718501 is a deficient number, since it is larger than the sum of its proper divisors (22026247).

133718501 is a wasteful number, since it uses less digits than its factorization.

133718501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428 (or 3421 counting only the distinct ones).

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

The square root of 133718501 is about 11563.6716055066. The cubic root of 133718501 is about 511.3644113596.

The spelling of 133718501 in words is "one hundred thirty-three million, seven hundred eighteen thousand, five hundred one".