51975611 has 2 divisors, whose sum is σ = 51975612. Its totient is φ = 51975610.

The previous prime is 51975557. The next prime is 51975629. The reversal of 51975611 is 11657915.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51975611 is a prime.

It is not a weakly prime, because it can be changed into another prime (51975631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25987805 + 25987806.

It is an arithmetic number, because the mean of its divisors is an integer number (25987806).

Almost surely, 2^51975611 is an apocalyptic number.

51975611 is a deficient number, since it is larger than the sum of its proper divisors (1).

51975611 is an equidigital number, since it uses as much as digits as its factorization.

51975611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 35.

The square root of 51975611 is about 7209.4112797093. The cubic root of 51975611 is about 373.1927525726.

The spelling of 51975611 in words is "fifty-one million, nine hundred seventy-five thousand, six hundred eleven".