51494753 has 2 divisors, whose sum is σ = 51494754. Its totient is φ = 51494752.

The previous prime is 51494743. The next prime is 51494771. The reversal of 51494753 is 35749415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46689889 + 4804864 = 6833^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 51494753 - 2⁸ = 51494497 is a prime.

It is not a weakly prime, because it can be changed into another prime (51494743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25747376 + 25747377.

It is an arithmetic number, because the mean of its divisors is an integer number (25747377).

Almost surely, 2^51494753 is an apocalyptic number.

It is an amenable number.

51494753 is a deficient number, since it is larger than the sum of its proper divisors (1).

51494753 is an equidigital number, since it uses as much as digits as its factorization.

51494753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 51494753 is about 7175.9844620791. The cubic root of 51494753 is about 372.0383073242.

The spelling of 51494753 in words is "fifty-one million, four hundred ninety-four thousand, seven hundred fifty-three".