133897056 has 36 divisors (see below), whose sum is σ = 351777636. Its totient is φ = 44594560.

The previous prime is 133897051. The next prime is 133897061. The reversal of 133897056 is 650798331.

It is an interprime number because it is at equal distance from previous prime (133897051) and next prime (133897061).

It is a junction number, because it is equal to n+sod(n) for n = 133896999 and 133897017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133897051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112786 + ... + 113966.

It is an arithmetic number, because the mean of its divisors is an integer number (9771601).

Almost surely, 2^133897056 is an apocalyptic number.

133897056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133897056 is an abundant number, since it is smaller than the sum of its proper divisors (217880580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133897056 is an frugal number, since it uses more digits than its factorization.

133897056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 133897056 is about 11571.3895449077. The cubic root of 133897056 is about 511.5919192989.

The spelling of 133897056 in words is "one hundred thirty-three million, eight hundred ninety-seven thousand, fifty-six".