49085581 has 8 divisors (see below), whose sum is σ = 50140800. Its totient is φ = 48051724.

The previous prime is 49085567. The next prime is 49085587. The reversal of 49085581 is 18558094.

It is a de Polignac number, because none of the positive numbers 2^k-49085581 is a prime.

It is a super-2 number, since 2×49085581² = 4818788524215122, 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 (49085587) 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, 205260 + ... + 205498.

It is an arithmetic number, because the mean of its divisors is an integer number (6267600).

Almost surely, 2^49085581 is an apocalyptic number.

It is an amenable number.

49085581 is a deficient number, since it is larger than the sum of its proper divisors (1055219).

49085581 is an frugal number, since it uses more digits than its factorization.

49085581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 49085581 is about 7006.1102617644. The cubic root of 49085581 is about 366.1434858988.

The spelling of 49085581 in words is "forty-nine million, eighty-five thousand, five hundred eighty-one".