51443541 has 6 divisors (see below), whose sum is σ = 74307350. Its totient is φ = 34295688.

The previous prime is 51443533. The next prime is 51443551. The reversal of 51443541 is 14534415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51065316 + 378225 = 7146^2 + 615^2 .

It is not a de Polignac number, because 51443541 - 2³ = 51443533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51443551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2857966 + ... + 2857983.

Almost surely, 2^51443541 is an apocalyptic number.

It is an amenable number.

51443541 is a deficient number, since it is larger than the sum of its proper divisors (22863809).

51443541 is a wasteful number, since it uses less digits than its factorization.

51443541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715955 (or 5715952 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51443541 is about 7172.4152835708. The cubic root of 51443541 is about 371.9149345905.

Adding to 51443541 its reverse (14534415), we get a palindrome (65977956).

It can be divided in two parts, 51443 and 541, that added together give a square (51984 = 228²).

The spelling of 51443541 in words is "fifty-one million, four hundred forty-three thousand, five hundred forty-one".