133021477 has 4 divisors (see below), whose sum is σ = 133051360. Its totient is φ = 132991596.

The previous prime is 133021457. The next prime is 133021501. The reversal of 133021477 is 774120331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 774120331 = 2503 ⋅309277.

It is a cyclic number.

It is not a de Polignac number, because 133021477 - 2¹¹ = 133019429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133021417) 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 3 ways as a sum of consecutive naturals, for example, 6777 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (33262840).

Almost surely, 2^133021477 is an apocalyptic number.

It is an amenable number.

133021477 is a deficient number, since it is larger than the sum of its proper divisors (29883).

133021477 is an equidigital number, since it uses as much as digits as its factorization.

133021477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29882.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 133021477 is about 11533.4937031240. The cubic root of 133021477 is about 510.4743465797.

The spelling of 133021477 in words is "one hundred thirty-three million, twenty-one thousand, four hundred seventy-seven".