51940801 has 4 divisors (see below), whose sum is σ = 56662704. Its totient is φ = 47218900.

The previous prime is 51940771. The next prime is 51940817. The reversal of 51940801 is 10804915.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51940801 - 2⁹ = 51940289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51940801.

It is not an unprimeable number, because it can be changed into a prime (51940201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360935 + ... + 2360956.

It is an arithmetic number, because the mean of its divisors is an integer number (14165676).

Almost surely, 2^51940801 is an apocalyptic number.

It is an amenable number.

51940801 is a deficient number, since it is larger than the sum of its proper divisors (4721903).

51940801 is a wasteful number, since it uses less digits than its factorization.

51940801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721902.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 51940801 is about 7206.9966699035. The cubic root of 51940801 is about 373.1094202769.

The spelling of 51940801 in words is "fifty-one million, nine hundred forty thousand, eight hundred one".