51095561 has 8 divisors (see below), whose sum is σ = 55792800. Its totient is φ = 46407040.

The previous prime is 51095543. The next prime is 51095563. The reversal of 51095561 is 16559015.

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 51095561 - 2⁶ = 51095497 is a prime.

It is a super-2 number, since 2×51095561² = 5221512707809442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51095563) 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, 19550 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 2^51095561 is an apocalyptic number.

It is an amenable number.

51095561 is a deficient number, since it is larger than the sum of its proper divisors (4697239).

51095561 is a wasteful number, since it uses less digits than its factorization.

51095561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 51095561 is about 7148.1159056076. The cubic root of 51095561 is about 371.0744541470.

The spelling of 51095561 in words is "fifty-one million, ninety-five thousand, five hundred sixty-one".