51375006 has 16 divisors (see below), whose sum is σ = 114166800. Its totient is φ = 17124984.

The previous prime is 51375001. The next prime is 51375013. The reversal of 51375006 is 60057315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475641 + ... + 475748.

It is an arithmetic number, because the mean of its divisors is an integer number (7135425).

Almost surely, 2^51375006 is an apocalyptic number.

51375006 is an abundant number, since it is smaller than the sum of its proper divisors (62791794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51375006 is a wasteful number, since it uses less digits than its factorization.

51375006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951400 (or 951394 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 51375006 is about 7167.6360119638. The cubic root of 51375006 is about 371.7497015528.

The spelling of 51375006 in words is "fifty-one million, three hundred seventy-five thousand, six".