51023011 has 4 divisors (see below), whose sum is σ = 54947872. Its totient is φ = 47098152.

The previous prime is 51022997. The next prime is 51023053. The reversal of 51023011 is 11032015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11032015 = 5 ⋅2206403.

It is a cyclic number.

It is not a de Polignac number, because 51023011 - 2⁷ = 51022883 is a prime.

It is a super-2 number, since 2×51023011² = 5206695303012242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 3924847 = 51023011 / (5 + 1 + 0 + 2 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51022982 and 51023000.

It is not an unprimeable number, because it can be changed into a prime (51023081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1962411 + ... + 1962436.

It is an arithmetic number, because the mean of its divisors is an integer number (13736968).

Almost surely, 2^51023011 is an apocalyptic number.

51023011 is a deficient number, since it is larger than the sum of its proper divisors (3924861).

51023011 is a wasteful number, since it uses less digits than its factorization.

51023011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924860.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51023011 is about 7143.0393391049. The cubic root of 51023011 is about 370.8987428393.

Adding to 51023011 its reverse (11032015), we get a palindrome (62055026).

The spelling of 51023011 in words is "fifty-one million, twenty-three thousand, eleven".