51544641 has 8 divisors (see below), whose sum is σ = 69752224. Its totient is φ = 33850080.

The previous prime is 51544639. The next prime is 51544657. The reversal of 51544641 is 14644515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51544641 - 2¹ = 51544639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51544599 and 51544608.

It is not an unprimeable number, because it can be changed into a prime (51544621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128020 + ... + 128421.

It is an arithmetic number, because the mean of its divisors is an integer number (8719028).

Almost surely, 2^51544641 is an apocalyptic number.

It is an amenable number.

51544641 is a deficient number, since it is larger than the sum of its proper divisors (18207583).

51544641 is a wasteful number, since it uses less digits than its factorization.

51544641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256511.

The product of its digits is 9600, while the sum is 30.

The square root of 51544641 is about 7179.4596593337. The cubic root of 51544641 is about 372.1584118366.

The spelling of 51544641 in words is "fifty-one million, five hundred forty-four thousand, six hundred forty-one".