51026145 has 16 divisors (see below), whose sum is σ = 83849280. Its totient is φ = 26478144.

The previous prime is 51026141. The next prime is 51026147. The reversal of 51026145 is 54162015.

It is not a de Polignac number, because 51026145 - 2² = 51026141 is a prime.

It is a super-2 number, since 2×51026145² = 5207334947122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51026141) 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 15 ways as a sum of consecutive naturals, for example, 45415 + ... + 46524.

It is an arithmetic number, because the mean of its divisors is an integer number (5240580).

Almost surely, 2^51026145 is an apocalyptic number.

It is an amenable number.

51026145 is a deficient number, since it is larger than the sum of its proper divisors (32823135).

51026145 is a wasteful number, since it uses less digits than its factorization.

51026145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91984.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51026145 is about 7143.2587101406. The cubic root of 51026145 is about 370.9063366213.

The spelling of 51026145 in words is "fifty-one million, twenty-six thousand, one hundred forty-five".