44455557 has 4 divisors (see below), whose sum is σ = 59274080. Its totient is φ = 29637036.

The previous prime is 44455517. The next prime is 44455577. The reversal of 44455557 is 75555444.

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 44455557 - 2⁷ = 44455429 is a prime.

It is the 6668-th Hogben number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44455517) by changing a digit.

It is a nontrivial repunit in base 6667.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7409257 + ... + 7409262.

It is an arithmetic number, because the mean of its divisors is an integer number (14818520).

Almost surely, 2^44455557 is an apocalyptic number.

It is an amenable number.

44455557 is a deficient number, since it is larger than the sum of its proper divisors (14818523).

44455557 is a wasteful number, since it uses less digits than its factorization.

44455557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818522.

The product of its digits is 280000, while the sum is 39.

The square root of 44455557 is about 6667.5000562430. The cubic root of 44455557 is about 354.2490427317.

The spelling of 44455557 in words is "forty-four million, four hundred fifty-five thousand, five hundred fifty-seven".