49667581 has 8 divisors (see below), whose sum is σ = 50375520. Its totient is φ = 48964368.

The previous prime is 49667573. The next prime is 49667599. The reversal of 49667581 is 18576694.

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 49667581 - 2³ = 49667573 is a prime.

It is a super-2 number, since 2×49667581² = 4933737204783122, 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 (49667551) 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, 23490 + ... + 25516.

It is an arithmetic number, because the mean of its divisors is an integer number (6296940).

Almost surely, 2^49667581 is an apocalyptic number.

It is an amenable number.

49667581 is a deficient number, since it is larger than the sum of its proper divisors (707939).

49667581 is a wasteful number, since it uses less digits than its factorization.

49667581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363.

The product of its digits is 362880, while the sum is 46.

The square root of 49667581 is about 7047.5230400475. The cubic root of 49667581 is about 367.5849057991.

The spelling of 49667581 in words is "forty-nine million, six hundred sixty-seven thousand, five hundred eighty-one".