133503457 has 2 divisors, whose sum is σ = 133503458. Its totient is φ = 133503456.

The previous prime is 133503451. The next prime is 133503473. The reversal of 133503457 is 754305331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95570176 + 37933281 = 9776^2 + 6159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133503457 is a prime.

It is not a weakly prime, because it can be changed into another prime (133503451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66751728 + 66751729.

It is an arithmetic number, because the mean of its divisors is an integer number (66751729).

Almost surely, 2^133503457 is an apocalyptic number.

It is an amenable number.

133503457 is a deficient number, since it is larger than the sum of its proper divisors (1).

133503457 is an equidigital number, since it uses as much as digits as its factorization.

133503457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 133503457 is about 11554.3696063437. The cubic root of 133503457 is about 511.0901415345.

Adding to 133503457 its reverse (754305331), we get a palindrome (887808788).

It can be divided in two parts, 13350 and 3457, that added together give a 5-th power (16807 = 7⁵).

The spelling of 133503457 in words is "one hundred thirty-three million, five hundred three thousand, four hundred fifty-seven".