51488641 has 4 divisors (see below), whose sum is σ = 52584192. Its totient is φ = 50393092.

The previous prime is 51488627. The next prime is 51488653. The reversal of 51488641 is 14688415.

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 51488641 - 2⁵ = 51488609 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 51488641.

It is not an unprimeable number, because it can be changed into a prime (51488611) 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, 547705 + ... + 547798.

It is an arithmetic number, because the mean of its divisors is an integer number (13146048).

Almost surely, 2^51488641 is an apocalyptic number.

It is an amenable number.

51488641 is a deficient number, since it is larger than the sum of its proper divisors (1095551).

51488641 is a wasteful number, since it uses less digits than its factorization.

51488641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095550.

The product of its digits is 30720, while the sum is 37.

The square root of 51488641 is about 7175.5585845285. The cubic root of 51488641 is about 372.0235874549.

The spelling of 51488641 in words is "fifty-one million, four hundred eighty-eight thousand, six hundred forty-one".