133263155 has 4 divisors (see below), whose sum is σ = 159915792. Its totient is φ = 106610520.

The previous prime is 133263133. The next prime is 133263157. The reversal of 133263155 is 551362331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 133263155 - 2¹⁰ = 133262131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133263157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13326311 + ... + 13326320.

It is an arithmetic number, because the mean of its divisors is an integer number (39978948).

Almost surely, 2^133263155 is an apocalyptic number.

133263155 is a deficient number, since it is larger than the sum of its proper divisors (26652637).

133263155 is an equidigital number, since it uses as much as digits as its factorization.

133263155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26652636.

The product of its digits is 8100, while the sum is 29.

The square root of 133263155 is about 11543.9661728541. The cubic root of 133263155 is about 510.7833086678.

The spelling of 133263155 in words is "one hundred thirty-three million, two hundred sixty-three thousand, one hundred fifty-five".