49122281 has 4 divisors (see below), whose sum is σ = 52900932. Its totient is φ = 45343632.

The previous prime is 49122253. The next prime is 49122287. The reversal of 49122281 is 18222194.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23921881 + 25200400 = 4891^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 49122281 - 2¹⁰ = 49121257 is a prime.

It is a super-2 number, since 2×49122281² = 4825996981285922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49122287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889306 + ... + 1889331.

It is an arithmetic number, because the mean of its divisors is an integer number (13225233).

Almost surely, 2^49122281 is an apocalyptic number.

It is an amenable number.

49122281 is a deficient number, since it is larger than the sum of its proper divisors (3778651).

49122281 is a wasteful number, since it uses less digits than its factorization.

49122281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778650.

The product of its digits is 2304, while the sum is 29.

The square root of 49122281 is about 7008.7289147177. The cubic root of 49122281 is about 366.2347151227.

The spelling of 49122281 in words is "forty-nine million, one hundred twenty-two thousand, two hundred eighty-one".