45212133 has 4 divisors (see below), whose sum is σ = 60282848. Its totient is φ = 30141420.

The previous prime is 45212119. The next prime is 45212143. The reversal of 45212133 is 33121254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45212133 - 2⁴ = 45212117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45212143) 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, 7535353 + ... + 7535358.

It is an arithmetic number, because the mean of its divisors is an integer number (15070712).

Almost surely, 2^45212133 is an apocalyptic number.

It is an amenable number.

45212133 is a deficient number, since it is larger than the sum of its proper divisors (15070715).

45212133 is a wasteful number, since it uses less digits than its factorization.

45212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15070714.

The product of its digits is 720, while the sum is 21.

The square root of 45212133 is about 6723.9968024978. The cubic root of 45212133 is about 356.2473688941.

Adding to 45212133 its reverse (33121254), we get a palindrome (78333387).

The spelling of 45212133 in words is "forty-five million, two hundred twelve thousand, one hundred thirty-three".