51145371 has 32 divisors (see below), whose sum is σ = 78174720. Its totient is φ = 33033312.

The previous prime is 51145349. The next prime is 51145379. The reversal of 51145371 is 17354115.

51145371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51145371 - 2⁹ = 51144859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51145379) 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 31 ways as a sum of consecutive naturals, for example, 147220 + ... + 147566.

It is an arithmetic number, because the mean of its divisors is an integer number (2442960).

Almost surely, 2^51145371 is an apocalyptic number.

51145371 is a deficient number, since it is larger than the sum of its proper divisors (27029349).

51145371 is a wasteful number, since it uses less digits than its factorization.

51145371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 506 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 51145371 is about 7151.5991917892. The cubic root of 51145371 is about 371.1949944014.

Adding to 51145371 its reverse (17354115), we get a palindrome (68499486).

The spelling of 51145371 in words is "fifty-one million, one hundred forty-five thousand, three hundred seventy-one".