51065601 has 8 divisors (see below), whose sum is σ = 69203904. Its totient is φ = 33485520.

The previous prime is 51065593. The next prime is 51065611. The reversal of 51065601 is 10656015.

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

It is not a de Polignac number, because 51065601 - 2³ = 51065593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51065611) 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, 139341 + ... + 139706.

It is an arithmetic number, because the mean of its divisors is an integer number (8650488).

Almost surely, 2^51065601 is an apocalyptic number.

It is an amenable number.

51065601 is a deficient number, since it is larger than the sum of its proper divisors (18138303).

51065601 is a wasteful number, since it uses less digits than its factorization.

51065601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279111.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51065601 is about 7146.0199411980. The cubic root of 51065601 is about 371.0019131798.

The spelling of 51065601 in words is "fifty-one million, sixty-five thousand, six hundred one".