133552503 has 32 divisors (see below), whose sum is σ = 227025920. Its totient is φ = 76010400.

The previous prime is 133552487. The next prime is 133552519. The reversal of 133552503 is 305255331.

133552503 is a `hidden beast` number, since 133 + 5 + 525 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (133552487) and next prime (133552519).

It is not a de Polignac number, because 133552503 - 2⁴ = 133552487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133552303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51078 + ... + 53628.

It is an arithmetic number, because the mean of its divisors is an integer number (7094560).

Almost surely, 2^133552503 is an apocalyptic number.

133552503 is a deficient number, since it is larger than the sum of its proper divisors (93473417).

133552503 is a wasteful number, since it uses less digits than its factorization.

133552503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844 (or 2838 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 133552503 is about 11556.4918119644. The cubic root of 133552503 is about 511.1527213323.

The spelling of 133552503 in words is "one hundred thirty-three million, five hundred fifty-two thousand, five hundred three".