133211745 has 96 divisors (see below), whose sum is σ = 261211392. Its totient is φ = 62447616.

The previous prime is 133211713. The next prime is 133211753. The reversal of 133211745 is 547112331.

It is not a de Polignac number, because 133211745 - 2⁵ = 133211713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1178809 + ... + 1178921.

It is an arithmetic number, because the mean of its divisors is an integer number (2720952).

Almost surely, 2^133211745 is an apocalyptic number.

133211745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133211745 is a deficient number, since it is larger than the sum of its proper divisors (127999647).

133211745 is a wasteful number, since it uses less digits than its factorization.

133211745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 228 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 133211745 is about 11541.7392536827. The cubic root of 133211745 is about 510.7176172235.

It can be divided in two parts, 133211 and 745, that added together give a square (133956 = 366²).

The spelling of 133211745 in words is "one hundred thirty-three million, two hundred eleven thousand, seven hundred forty-five".