51601291 has 8 divisors (see below), whose sum is σ = 59781344. Its totient is φ = 43623360.

The previous prime is 51601289. The next prime is 51601313. The reversal of 51601291 is 19210615.

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 51601291 - 2¹ = 51601289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51601211) 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, 49980 + ... + 51001.

It is an arithmetic number, because the mean of its divisors is an integer number (7472668).

Almost surely, 2^51601291 is an apocalyptic number.

51601291 is a deficient number, since it is larger than the sum of its proper divisors (8180053).

51601291 is a wasteful number, since it uses less digits than its factorization.

51601291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101061.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 51601291 is about 7183.4038588959. The cubic root of 51601291 is about 372.2947018218.

The spelling of 51601291 in words is "fifty-one million, six hundred one thousand, two hundred ninety-one".