49128461 has 4 divisors (see below), whose sum is σ = 49348992. Its totient is φ = 48907932.

The previous prime is 49128449. The next prime is 49128473. The reversal of 49128461 is 16482194.

It is a happy number.

49128461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16482194 = 2 ⋅8241097.

It is an interprime number because it is at equal distance from previous prime (49128449) and next prime (49128473).

It is a cyclic number.

It is not a de Polignac number, because 49128461 - 2¹⁸ = 48866317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49128421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109931 + ... + 110376.

It is an arithmetic number, because the mean of its divisors is an integer number (12337248).

Almost surely, 2^49128461 is an apocalyptic number.

It is an amenable number.

49128461 is a deficient number, since it is larger than the sum of its proper divisors (220531).

49128461 is a wasteful number, since it uses less digits than its factorization.

49128461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220530.

The product of its digits is 13824, while the sum is 35.

The square root of 49128461 is about 7009.1697796529. The cubic root of 49128461 is about 366.2500729575.

The spelling of 49128461 in words is "forty-nine million, one hundred twenty-eight thousand, four hundred sixty-one".