51161479 has 2 divisors, whose sum is σ = 51161480. Its totient is φ = 51161478.

The previous prime is 51161459. The next prime is 51161489. The reversal of 51161479 is 97416115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51161479 - 2⁵ = 51161447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51161419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580739 + 25580740.

It is an arithmetic number, because the mean of its divisors is an integer number (25580740).

Almost surely, 2^51161479 is an apocalyptic number.

51161479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51161479 is an equidigital number, since it uses as much as digits as its factorization.

51161479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 51161479 is about 7152.7252848128. The cubic root of 51161479 is about 371.2339590314.

The spelling of 51161479 in words is "fifty-one million, one hundred sixty-one thousand, four hundred seventy-nine".