51069973 has 2 divisors, whose sum is σ = 51069974. Its totient is φ = 51069972.

The previous prime is 51069947. The next prime is 51070007. The reversal of 51069973 is 37996015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51022449 + 47524 = 7143^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 51069973 - 2¹³ = 51061781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51069373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25534986 + 25534987.

It is an arithmetic number, because the mean of its divisors is an integer number (25534987).

Almost surely, 2^51069973 is an apocalyptic number.

It is an amenable number.

51069973 is a deficient number, since it is larger than the sum of its proper divisors (1).

51069973 is an equidigital number, since it uses as much as digits as its factorization.

51069973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 51069973 is about 7146.3258391988. The cubic root of 51069973 is about 371.0125006989.

The spelling of 51069973 in words is "fifty-one million, sixty-nine thousand, nine hundred seventy-three".