133656545 has 32 divisors (see below), whose sum is σ = 186624000. Its totient is φ = 90866880.

The previous prime is 133656541. The next prime is 133656547. The reversal of 133656545 is 545656331.

It is not a de Polignac number, because 133656545 - 2² = 133656541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133656499 and 133656508.

It is not an unprimeable number, because it can be changed into a prime (133656541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81746 + ... + 83364.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^133656545 is an apocalyptic number.

It is an amenable number.

133656545 is a deficient number, since it is larger than the sum of its proper divisors (52967455).

133656545 is a wasteful number, since it uses less digits than its factorization.

133656545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its digits is 162000, while the sum is 38.

The square root of 133656545 is about 11560.9923881992. The cubic root of 133656545 is about 511.2854220709.

The spelling of 133656545 in words is "one hundred thirty-three million, six hundred fifty-six thousand, five hundred forty-five".