51601155 has 8 divisors (see below), whose sum is σ = 82561872. Its totient is φ = 27520608.

The previous prime is 51601153. The next prime is 51601157. The reversal of 51601155 is 55110615.

51601155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51601153) and next prime (51601157).

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

It is not a de Polignac number, because 51601155 - 2¹ = 51601153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51601153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720024 + ... + 1720053.

It is an arithmetic number, because the mean of its divisors is an integer number (10320234).

Almost surely, 2^51601155 is an apocalyptic number.

51601155 is a deficient number, since it is larger than the sum of its proper divisors (30960717).

51601155 is a wasteful number, since it uses less digits than its factorization.

51601155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440085.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51601155 is about 7183.3943926253. The cubic root of 51601155 is about 372.2943747491.

The spelling of 51601155 in words is "fifty-one million, six hundred one thousand, one hundred fifty-five".