133651550 has 24 divisors (see below), whose sum is σ = 253885536. Its totient is φ = 52322240.

The previous prime is 133651543. The next prime is 133651559. The reversal of 133651550 is 55156331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133651559) 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 11 ways as a sum of consecutive naturals, for example, 26087 + ... + 30786.

It is an arithmetic number, because the mean of its divisors is an integer number (10578564).

Almost surely, 2^133651550 is an apocalyptic number.

133651550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133651550 is a deficient number, since it is larger than the sum of its proper divisors (120233986).

133651550 is a wasteful number, since it uses less digits than its factorization.

133651550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56932 (or 56927 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 133651550 is about 11560.7763580133. The cubic root of 133651550 is about 511.2790527545.

It can be divided in two parts, 13 and 3651550, that added together give a palindrome (3651563).

The spelling of 133651550 in words is "one hundred thirty-three million, six hundred fifty-one thousand, five hundred fifty".