49689261 has 16 divisors (see below), whose sum is σ = 75604800. Its totient is φ = 32230224.

The previous prime is 49689257. The next prime is 49689287. The reversal of 49689261 is 16298694.

It is a happy number.

It is not a de Polignac number, because 49689261 - 2² = 49689257 is a prime.

It is a super-2 number, since 2×49689261² = 4938045317452242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49689221) 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, 23871 + ... + 25868.

It is an arithmetic number, because the mean of its divisors is an integer number (4725300).

Almost surely, 2^49689261 is an apocalyptic number.

It is an amenable number.

49689261 is a deficient number, since it is larger than the sum of its proper divisors (25915539).

49689261 is a wasteful number, since it uses less digits than its factorization.

49689261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49785 (or 49779 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 49689261 is about 7049.0610012966. The cubic root of 49689261 is about 367.6383818717.

The spelling of 49689261 in words is "forty-nine million, six hundred eighty-nine thousand, two hundred sixty-one".