133137454 has 4 divisors (see below), whose sum is σ = 199706184. Its totient is φ = 66568726.

The previous prime is 133137451. The next prime is 133137469. The reversal of 133137454 is 454731331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133137451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33284362 + ... + 33284365.

It is an arithmetic number, because the mean of its divisors is an integer number (49926546).

Almost surely, 2^133137454 is an apocalyptic number.

133137454 is a deficient number, since it is larger than the sum of its proper divisors (66568730).

133137454 is an equidigital number, since it uses as much as digits as its factorization.

133137454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66568729.

The product of its digits is 15120, while the sum is 31.

The square root of 133137454 is about 11538.5204424137. The cubic root of 133137454 is about 510.6226586848.

Adding to 133137454 its reverse (454731331), we get a palindrome (587868785).

The spelling of 133137454 in words is "one hundred thirty-three million, one hundred thirty-seven thousand, four hundred fifty-four".