51288011 has 4 divisors (see below), whose sum is σ = 53987400. Its totient is φ = 48588624.

The previous prime is 51288001. The next prime is 51288019. The reversal of 51288011 is 11088215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11088215 = 5 ⋅2217643.

It is not a de Polignac number, because 51288011 - 2⁶ = 51287947 is a prime.

It is a super-2 number, since 2×51288011² = 5260920144672242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51288019) 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, 1349666 + ... + 1349703.

It is an arithmetic number, because the mean of its divisors is an integer number (13496850).

Almost surely, 2^51288011 is an apocalyptic number.

51288011 is a deficient number, since it is larger than the sum of its proper divisors (2699389).

51288011 is a wasteful number, since it uses less digits than its factorization.

51288011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699388.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 51288011 is about 7161.5648429655. The cubic root of 51288011 is about 371.5397509735.

The spelling of 51288011 in words is "fifty-one million, two hundred eighty-eight thousand, eleven".