133861533 has 8 divisors (see below), whose sum is σ = 192211488. Its totient is φ = 82376304.

The previous prime is 133861531. The next prime is 133861543. The reversal of 133861533 is 335168331.

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

It is not a de Polignac number, because 133861533 - 2¹ = 133861531 is a prime.

It is a super-2 number, since 2×133861533² = 35837820034220178, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 133861494 and 133861503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133861531) 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, 1716135 + ... + 1716212.

It is an arithmetic number, because the mean of its divisors is an integer number (24026436).

Almost surely, 2^133861533 is an apocalyptic number.

133861533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133861533 is a deficient number, since it is larger than the sum of its proper divisors (58349955).

133861533 is a wasteful number, since it uses less digits than its factorization.

133861533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432363.

The product of its digits is 19440, while the sum is 33.

The square root of 133861533 is about 11569.8544934671. The cubic root of 133861533 is about 511.5466733773.

The spelling of 133861533 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, five hundred thirty-three".