51440841 has 24 divisors (see below), whose sum is σ = 76826880. Its totient is φ = 33142176.

The previous prime is 51440801. The next prime is 51440911. The reversal of 51440841 is 14804415.

It is a happy number.

It is not a de Polignac number, because 51440841 - 2⁶ = 51440777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51440801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59176 + ... + 60038.

It is an arithmetic number, because the mean of its divisors is an integer number (3201120).

Almost surely, 2^51440841 is an apocalyptic number.

It is an amenable number.

51440841 is a deficient number, since it is larger than the sum of its proper divisors (25386039).

51440841 is a wasteful number, since it uses less digits than its factorization.

51440841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 51440841 is about 7172.2270599863. The cubic root of 51440841 is about 371.9084278592.

The spelling of 51440841 in words is "fifty-one million, four hundred forty thousand, eight hundred forty-one".