73133955 has 64 divisors (see below), whose sum is σ = 135757440. Its totient is φ = 37324800.

The previous prime is 73133953. The next prime is 73133971. The reversal of 73133955 is 55933137.

It is a happy number.

It is not a de Polignac number, because 73133955 - 2¹ = 73133953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73133953) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 403965 + ... + 404145.

It is an arithmetic number, because the mean of its divisors is an integer number (2121210).

Almost surely, 2^73133955 is an apocalyptic number.

73133955 is a deficient number, since it is larger than the sum of its proper divisors (62623485).

73133955 is a wasteful number, since it uses less digits than its factorization.

73133955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 303 counting only the distinct ones).

The product of its digits is 42525, while the sum is 36.

The square root of 73133955 is about 8551.8392758517. The cubic root of 73133955 is about 418.1893996807.

It can be divided in two parts, 7313395 and 5, that added together give a triangular number (7313400 = T₃₈₂₄).

The spelling of 73133955 in words is "seventy-three million, one hundred thirty-three thousand, nine hundred fifty-five".