133261503 has 8 divisors (see below), whose sum is σ = 179407488. Its totient is φ = 87978264.

The previous prime is 133261501. The next prime is 133261519. The reversal of 133261503 is 305162331.

It is a happy number.

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

It is not a de Polignac number, because 133261503 - 2¹ = 133261501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133261501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215325 + ... + 215942.

It is an arithmetic number, because the mean of its divisors is an integer number (22425936).

Almost surely, 2^133261503 is an apocalyptic number.

133261503 is a deficient number, since it is larger than the sum of its proper divisors (46145985).

133261503 is a wasteful number, since it uses less digits than its factorization.

133261503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431373.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 133261503 is about 11543.8946201011. The cubic root of 133261503 is about 510.7811980131.

It can be divided in two parts, 1332 and 61503, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 133261503 in words is "one hundred thirty-three million, two hundred sixty-one thousand, five hundred three".