51032147 has 8 divisors (see below), whose sum is σ = 56383776. Its totient is φ = 45941632.

The previous prime is 51032143. The next prime is 51032153. The reversal of 51032147 is 74123015.

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 51032147 - 2² = 51032143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51032143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64868 + ... + 65649.

It is an arithmetic number, because the mean of its divisors is an integer number (7047972).

Almost surely, 2^51032147 is an apocalyptic number.

51032147 is a deficient number, since it is larger than the sum of its proper divisors (5351629).

51032147 is a wasteful number, since it uses less digits than its factorization.

51032147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130557.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 51032147 is about 7143.6788141685. The cubic root of 51032147 is about 370.9208787908.

The spelling of 51032147 in words is "fifty-one million, thirty-two thousand, one hundred forty-seven".