44220557 has 8 divisors (see below), whose sum is σ = 44622336. Its totient is φ = 43821072.

The previous prime is 44220551. The next prime is 44220571. The reversal of 44220557 is 75502244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44220557 - 2⁶ = 44220493 is a prime.

It is a super-2 number, since 2×44220557² = 3910915322780498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44220551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72548 + ... + 73154.

It is an arithmetic number, because the mean of its divisors is an integer number (5577792).

Almost surely, 2^44220557 is an apocalyptic number.

It is an amenable number.

44220557 is a deficient number, since it is larger than the sum of its proper divisors (401779).

44220557 is a wasteful number, since it uses less digits than its factorization.

44220557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 44220557 is about 6649.8539081697. The cubic root of 44220557 is about 353.6237317332.

The spelling of 44220557 in words is "forty-four million, two hundred twenty thousand, five hundred fifty-seven".