133464621 has 4 divisors (see below), whose sum is σ = 177952832. Its totient is φ = 88976412.

The previous prime is 133464589. The next prime is 133464623. The reversal of 133464621 is 126464331.

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 133464621 - 2⁵ = 133464589 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 (133464623) 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, 22244101 + ... + 22244106.

It is an arithmetic number, because the mean of its divisors is an integer number (44488208).

Almost surely, 2^133464621 is an apocalyptic number.

It is an amenable number.

133464621 is a deficient number, since it is larger than the sum of its proper divisors (44488211).

133464621 is an equidigital number, since it uses as much as digits as its factorization.

133464621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44488210.

The product of its digits is 10368, while the sum is 30.

The square root of 133464621 is about 11552.6889077825. The cubic root of 133464621 is about 511.0405782194.

The spelling of 133464621 in words is "one hundred thirty-three million, four hundred sixty-four thousand, six hundred twenty-one".