133553145 has 24 divisors (see below), whose sum is σ = 234880128. Its totient is φ = 64752160.

The previous prime is 133553131. The next prime is 133553159. The reversal of 133553145 is 541355331.

It is an interprime number because it is at equal distance from previous prime (133553131) and next prime (133553159).

It is not a de Polignac number, because 133553145 - 2⁴ = 133553129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34977 + ... + 38606.

It is an arithmetic number, because the mean of its divisors is an integer number (9786672).

Almost surely, 2^133553145 is an apocalyptic number.

133553145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133553145 is a deficient number, since it is larger than the sum of its proper divisors (101326983).

133553145 is a wasteful number, since it uses less digits than its factorization.

133553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73613 (or 73602 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 133553145 is about 11556.5195885266. The cubic root of 133553145 is about 511.1535403848.

The spelling of 133553145 in words is "one hundred thirty-three million, five hundred fifty-three thousand, one hundred forty-five".