51204541 has 2 divisors, whose sum is σ = 51204542. Its totient is φ = 51204540.

The previous prime is 51204533. The next prime is 51204583. The reversal of 51204541 is 14540215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 1572516 = 7045^2 + 1254^2 .

It is a cyclic number.

It is not a de Polignac number, because 51204541 - 2³ = 51204533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602270 + 25602271.

It is an arithmetic number, because the mean of its divisors is an integer number (25602271).

Almost surely, 2^51204541 is an apocalyptic number.

It is an amenable number.

51204541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204541 is an equidigital number, since it uses as much as digits as its factorization.

51204541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51204541 is about 7155.7348329854. The cubic root of 51204541 is about 371.3380842056.

Adding to 51204541 its reverse (14540215), we get a palindrome (65744756).

The spelling of 51204541 in words is "fifty-one million, two hundred four thousand, five hundred forty-one".