44721345 has 32 divisors (see below), whose sum is σ = 77374080. Its totient is φ = 21980160.

The previous prime is 44721337. The next prime is 44721353. The reversal of 44721345 is 54312744.

It is an interprime number because it is at equal distance from previous prime (44721337) and next prime (44721353).

It is not a de Polignac number, because 44721345 - 2³ = 44721337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8425 + ... + 12665.

It is an arithmetic number, because the mean of its divisors is an integer number (2417940).

Almost surely, 2^44721345 is an apocalyptic number.

It is an amenable number.

44721345 is a deficient number, since it is larger than the sum of its proper divisors (32652735).

44721345 is a wasteful number, since it uses less digits than its factorization.

44721345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305.

The product of its digits is 13440, while the sum is 30.

The square root of 44721345 is about 6687.4019618982. The cubic root of 44721345 is about 354.9536274811.

The spelling of 44721345 in words is "forty-four million, seven hundred twenty-one thousand, three hundred forty-five".