51502541 has 2 divisors, whose sum is σ = 51502542. Its totient is φ = 51502540.

The previous prime is 51502513. The next prime is 51502567. The reversal of 51502541 is 14520515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 13322500 = 6179^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 51502541 - 2¹⁴ = 51486157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51562541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25751270 + 25751271.

It is an arithmetic number, because the mean of its divisors is an integer number (25751271).

Almost surely, 2^51502541 is an apocalyptic number.

It is an amenable number.

51502541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51502541 is an equidigital number, since it uses as much as digits as its factorization.

51502541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 51502541 is about 7176.5270848789. The cubic root of 51502541 is about 372.0570619100.

The spelling of 51502541 in words is "fifty-one million, five hundred two thousand, five hundred forty-one".