133553494 has 8 divisors (see below), whose sum is σ = 200392128. Its totient is φ = 66756120.

The previous prime is 133553467. The next prime is 133553501. The reversal of 133553494 is 494355331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×133553494³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 262 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (25049016).

Almost surely, 2^133553494 is an apocalyptic number.

133553494 is a deficient number, since it is larger than the sum of its proper divisors (66838634).

133553494 is a wasteful number, since it uses less digits than its factorization.

133553494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20630.

The product of its digits is 97200, while the sum is 37.

The square root of 133553494 is about 11556.5346882186. The cubic root of 133553494 is about 511.1539856318.

The spelling of 133553494 in words is "one hundred thirty-three million, five hundred fifty-three thousand, four hundred ninety-four".