51345541 has 4 divisors (see below), whose sum is σ = 55295212. Its totient is φ = 47395872.

The previous prime is 51345533. The next prime is 51345563. The reversal of 51345541 is 14554315.

51345541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14554315 = 5 ⋅2910863.

It can be written as a sum of positive squares in 2 ways, for example, as 14984641 + 36360900 = 3871^2 + 6030^2 .

It is a cyclic number.

It is not a de Polignac number, because 51345541 - 2³ = 51345533 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 (51345521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1974816 + ... + 1974841.

It is an arithmetic number, because the mean of its divisors is an integer number (13823803).

Almost surely, 2^51345541 is an apocalyptic number.

It is an amenable number.

51345541 is a deficient number, since it is larger than the sum of its proper divisors (3949671).

51345541 is a wasteful number, since it uses less digits than its factorization.

51345541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949670.

The product of its digits is 6000, while the sum is 28.

The square root of 51345541 is about 7165.5802975056. The cubic root of 51345541 is about 371.6786183514.

Adding to 51345541 its reverse (14554315), we get a palindrome (65899856).

The spelling of 51345541 in words is "fifty-one million, three hundred forty-five thousand, five hundred forty-one".