49102581 has 16 divisors (see below), whose sum is σ = 71949888. Its totient is φ = 29539200.

The previous prime is 49102577. The next prime is 49102583. The reversal of 49102581 is 18520194.

It is a happy number.

It is not a de Polignac number, because 49102581 - 2² = 49102577 is a prime.

It is a super-2 number, since 2×49102581² = 4822126921723122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49102583) 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, 910 + ... + 9951.

It is an arithmetic number, because the mean of its divisors is an integer number (4496868).

Almost surely, 2^49102581 is an apocalyptic number.

It is an amenable number.

49102581 is a deficient number, since it is larger than the sum of its proper divisors (22847307).

49102581 is a wasteful number, since it uses less digits than its factorization.

49102581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 49102581 is about 7007.3233834325. The cubic root of 49102581 is about 366.1857503188.

The spelling of 49102581 in words is "forty-nine million, one hundred two thousand, five hundred eighty-one".