133772247 has 12 divisors (see below), whose sum is σ = 220830480. Its totient is φ = 76441248.

The previous prime is 133772237. The next prime is 133772263. The reversal of 133772247 is 742277331.

It is a happy number.

It is not a de Polignac number, because 133772247 - 2⁴ = 133772231 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133772237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1061622 + ... + 1061747.

It is an arithmetic number, because the mean of its divisors is an integer number (18402540).

Almost surely, 2^133772247 is an apocalyptic number.

133772247 is a deficient number, since it is larger than the sum of its proper divisors (87058233).

133772247 is a wasteful number, since it uses less digits than its factorization.

133772247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123382 (or 2123379 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 133772247 is about 11565.9952879119. The cubic root of 133772247 is about 511.4329137484.

The spelling of 133772247 in words is "one hundred thirty-three million, seven hundred seventy-two thousand, two hundred forty-seven".