45321951 has 4 divisors (see below), whose sum is σ = 60429272. Its totient is φ = 30214632.

The previous prime is 45321919. The next prime is 45321953. The reversal of 45321951 is 15912354.

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

It is not a de Polignac number, because 45321951 - 2⁵ = 45321919 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 (45321953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7553656 + ... + 7553661.

It is an arithmetic number, because the mean of its divisors is an integer number (15107318).

Almost surely, 2^45321951 is an apocalyptic number.

45321951 is a deficient number, since it is larger than the sum of its proper divisors (15107321).

45321951 is a wasteful number, since it uses less digits than its factorization.

45321951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15107320.

The product of its digits is 5400, while the sum is 30.

The square root of 45321951 is about 6732.1579749736. The cubic root of 45321951 is about 356.5355713316.

The spelling of 45321951 in words is "forty-five million, three hundred twenty-one thousand, nine hundred fifty-one".