51761959 has 2 divisors, whose sum is σ = 51761960. Its totient is φ = 51761958.

The previous prime is 51761953. The next prime is 51761987. The reversal of 51761959 is 95916715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51761959 - 2³ = 51761951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51761951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25880979 + 25880980.

It is an arithmetic number, because the mean of its divisors is an integer number (25880980).

Almost surely, 2^51761959 is an apocalyptic number.

51761959 is a deficient number, since it is larger than the sum of its proper divisors (1).

51761959 is an equidigital number, since it uses as much as digits as its factorization.

51761959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 43.

The square root of 51761959 is about 7194.5784449125. The cubic root of 51761959 is about 372.6806990804.

The spelling of 51761959 in words is "fifty-one million, seven hundred sixty-one thousand, nine hundred fifty-nine".