6261139 has 4 divisors (see below), whose sum is σ = 6367320. Its totient is φ = 6154960.

The previous prime is 6261121. The next prime is 6261173. The reversal of 6261139 is 9311626.

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

It is a cyclic number.

It is not a de Polignac number, because 6261139 - 2⁵ = 6261107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6261109) 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, 53002 + ... + 53119.

It is an arithmetic number, because the mean of its divisors is an integer number (1591830).

Almost surely, 2^6261139 is an apocalyptic number.

6261139 is a deficient number, since it is larger than the sum of its proper divisors (106181).

6261139 is a wasteful number, since it uses less digits than its factorization.

6261139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106180.

The product of its digits is 1944, while the sum is 28.

The square root of 6261139 is about 2502.2268082650. The cubic root of 6261139 is about 184.3109404575.

It can be divided in two parts, 6261 and 139, that added together give a square (6400 = 80²).

The spelling of 6261139 in words is "six million, two hundred sixty-one thousand, one hundred thirty-nine".