51323841 has 32 divisors (see below), whose sum is σ = 79107840. Its totient is φ = 32860800.

The previous prime is 51323827. The next prime is 51323861. The reversal of 51323841 is 14832315.

It is a happy number.

It is not a de Polignac number, because 51323841 - 2⁶ = 51323777 is a prime.

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 (51323821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78271 + ... + 78923.

It is an arithmetic number, because the mean of its divisors is an integer number (2472120).

Almost surely, 2^51323841 is an apocalyptic number.

It is an amenable number.

51323841 is a deficient number, since it is larger than the sum of its proper divisors (27783999).

51323841 is a wasteful number, since it uses less digits than its factorization.

51323841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 768 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 51323841 is about 7164.0659544703. The cubic root of 51323841 is about 371.6262505291.

The spelling of 51323841 in words is "fifty-one million, three hundred twenty-three thousand, eight hundred forty-one".