133751265 has 16 divisors (see below), whose sum is σ = 214164096. Its totient is φ = 71280000.

The previous prime is 133751249. The next prime is 133751297. The reversal of 133751265 is 562157331.

It is not a de Polignac number, because 133751265 - 2⁴ = 133751249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24540 + ... + 29490.

It is an arithmetic number, because the mean of its divisors is an integer number (13385256).

Almost surely, 2^133751265 is an apocalyptic number.

133751265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133751265 is a deficient number, since it is larger than the sum of its proper divisors (80412831).

133751265 is a wasteful number, since it uses less digits than its factorization.

133751265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760.

The product of its digits is 18900, while the sum is 33.

The square root of 133751265 is about 11565.0881968103. The cubic root of 133751265 is about 511.4061731583.

The spelling of 133751265 in words is "one hundred thirty-three million, seven hundred fifty-one thousand, two hundred sixty-five".