66150451 has 4 divisors (see below), whose sum is σ = 70041672. Its totient is φ = 62259232.

The previous prime is 66150449. The next prime is 66150473. The reversal of 66150451 is 15405166.

66150451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66150451 - 2¹ = 66150449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66150481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945585 + ... + 1945618.

It is an arithmetic number, because the mean of its divisors is an integer number (17510418).

Almost surely, 2^66150451 is an apocalyptic number.

66150451 is a deficient number, since it is larger than the sum of its proper divisors (3891221).

66150451 is a wasteful number, since it uses less digits than its factorization.

66150451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891220.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 66150451 is about 8133.2927526310. The cubic root of 66150451 is about 404.4308440769.

The spelling of 66150451 in words is "sixty-six million, one hundred fifty thousand, four hundred fifty-one".