49444581 has 4 divisors (see below), whose sum is σ = 65926112. Its totient is φ = 32963052.

The previous prime is 49444561. The next prime is 49444589. The reversal of 49444581 is 18544494.

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 a de Polignac number, because none of the positive numbers 2^k-49444581 is a prime.

It is a super-2 number, since 2×49444581² = 4889533180531122, 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 (49444589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8240761 + ... + 8240766.

It is an arithmetic number, because the mean of its divisors is an integer number (16481528).

Almost surely, 2^49444581 is an apocalyptic number.

It is an amenable number.

49444581 is a deficient number, since it is larger than the sum of its proper divisors (16481531).

49444581 is a wasteful number, since it uses less digits than its factorization.

49444581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16481530.

The product of its digits is 92160, while the sum is 39.

The square root of 49444581 is about 7031.6840799342. The cubic root of 49444581 is about 367.0339466752.

The spelling of 49444581 in words is "forty-nine million, four hundred forty-four thousand, five hundred eighty-one".