133003457 has 4 divisors (see below), whose sum is σ = 138786240. Its totient is φ = 127220676.

The previous prime is 133003421. The next prime is 133003463. The reversal of 133003457 is 754300331.

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: 754300331 = 349 ⋅2161319.

It is a cyclic number.

It is not a de Polignac number, because 133003457 - 2¹⁶ = 132937921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133003487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891357 + ... + 2891402.

It is an arithmetic number, because the mean of its divisors is an integer number (34696560).

Almost surely, 2^133003457 is an apocalyptic number.

It is an amenable number.

133003457 is a deficient number, since it is larger than the sum of its proper divisors (5782783).

133003457 is an equidigital number, since it uses as much as digits as its factorization.

133003457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782782.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 133003457 is about 11532.7124736551. The cubic root of 133003457 is about 510.4512947554.

Adding to 133003457 its reverse (754300331), we get a palindrome (887303788).

The spelling of 133003457 in words is "one hundred thirty-three million, three thousand, four hundred fifty-seven".