51054951 has 4 divisors (see below), whose sum is σ = 68073272. Its totient is φ = 34036632.

The previous prime is 51054947. The next prime is 51054973. The reversal of 51054951 is 15945015.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51054951 - 2² = 51054947 is a prime.

It is a super-2 number, since 2×51054951² = 5213216043224802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51054901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509156 + ... + 8509161.

It is an arithmetic number, because the mean of its divisors is an integer number (17018318).

Almost surely, 2^51054951 is an apocalyptic number.

51054951 is a deficient number, since it is larger than the sum of its proper divisors (17018321).

51054951 is a wasteful number, since it uses less digits than its factorization.

51054951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17018320.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 51054951 is about 7145.2747322969. The cubic root of 51054951 is about 370.9761199190.

Adding to 51054951 its reverse (15945015), we get a palindrome (66999966).

The spelling of 51054951 in words is "fifty-one million, fifty-four thousand, nine hundred fifty-one".