5312561261 has 8 divisors (see below), whose sum is σ = 6074533824. Its totient is φ = 4551347520.

The previous prime is 5312561239. The next prime is 5312561273. The reversal of 5312561261 is 1621652135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5312561261 - 2¹⁸ = 5312299117 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 (5312561561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174620 + ... + 202773.

It is an arithmetic number, because the mean of its divisors is an integer number (759316728).

Almost surely, 2^5312561261 is an apocalyptic number.

It is an amenable number.

5312561261 is a deficient number, since it is larger than the sum of its proper divisors (761972563).

5312561261 is a wasteful number, since it uses less digits than its factorization.

5312561261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379411.

The product of its digits is 10800, while the sum is 32.

The square root of 5312561261 is about 72887.3189313477. The cubic root of 5312561261 is about 1744.8897187307.

The spelling of 5312561261 in words is "five billion, three hundred twelve million, five hundred sixty-one thousand, two hundred sixty-one".