51020267 has 4 divisors (see below), whose sum is σ = 51034896. Its totient is φ = 51005640.

The previous prime is 51020237. The next prime is 51020269. The reversal of 51020267 is 76202015.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76202015 = 5 ⋅15240403.

It is a cyclic number.

It is not a de Polignac number, because 51020267 - 2²⁴ = 34243051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51020269) 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, 1298 + ... + 10184.

It is an arithmetic number, because the mean of its divisors is an integer number (12758724).

Almost surely, 2^51020267 is an apocalyptic number.

51020267 is a deficient number, since it is larger than the sum of its proper divisors (14629).

51020267 is an equidigital number, since it uses as much as digits as its factorization.

51020267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14628.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 51020267 is about 7142.8472614217. The cubic root of 51020267 is about 370.8920937845.

The spelling of 51020267 in words is "fifty-one million, twenty thousand, two hundred sixty-seven".