49010531261 has 4 divisors (see below), whose sum is σ = 50335140252. Its totient is φ = 47685922272.

The previous prime is 49010531237. The next prime is 49010531263. The reversal of 49010531261 is 16213501094.

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 34922265625 + 14088265636 = 186875^2 + 118694^2 .

It is a cyclic number.

It is not a de Polignac number, because 49010531261 - 2⁶ = 49010531197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49010531263) 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, 662304440 + ... + 662304513.

It is an arithmetic number, because the mean of its divisors is an integer number (12583785063).

Almost surely, 2^49010531261 is an apocalyptic number.

It is an amenable number.

49010531261 is a deficient number, since it is larger than the sum of its proper divisors (1324608991).

49010531261 is a wasteful number, since it uses less digits than its factorization.

49010531261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324608990.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 49010531261 in words is "forty-nine billion, ten million, five hundred thirty-one thousand, two hundred sixty-one".