49140581 has 16 divisors (see below), whose sum is σ = 59808000. Its totient is φ = 40282704.

The previous prime is 49140577. The next prime is 49140583. The reversal of 49140581 is 18504194.

It is not a de Polignac number, because 49140581 - 2² = 49140577 is a prime.

It is a super-2 number, since 2×49140581² = 4829593402035122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49140583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4775 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (3738000).

Almost surely, 2^49140581 is an apocalyptic number.

It is an amenable number.

49140581 is a deficient number, since it is larger than the sum of its proper divisors (10667419).

49140581 is an equidigital number, since it uses as much as digits as its factorization.

49140581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273 (or 6259 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 49140581 is about 7010.0343080473. The cubic root of 49140581 is about 366.2801884671.

The spelling of 49140581 in words is "forty-nine million, one hundred forty thousand, five hundred eighty-one".