51146040 has 64 divisors (see below), whose sum is σ = 167391360. Its totient is φ = 12398720.

The previous prime is 51146033. The next prime is 51146059. The reversal of 51146040 is 4064115.

It is a junction number, because it is equal to n+sod(n) for n = 51145998 and 51146016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18054 + ... + 20693.

It is an arithmetic number, because the mean of its divisors is an integer number (2615490).

Almost surely, 2^51146040 is an apocalyptic number.

It is an amenable number.

51146040 is an abundant number, since it is smaller than the sum of its proper divisors (116245320).

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

51146040 is a wasteful number, since it uses less digits than its factorization.

51146040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38772 (or 38768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 51146040 is about 7151.6459643917. The cubic root of 51146040 is about 371.1966128493.

The spelling of 51146040 in words is "fifty-one million, one hundred forty-six thousand, forty".