51267263 has 4 divisors (see below), whose sum is σ = 53965560. Its totient is φ = 48568968.

The previous prime is 51267259. The next prime is 51267277. The reversal of 51267263 is 36276215.

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

It is a cyclic number.

It is not a de Polignac number, because 51267263 - 2² = 51267259 is a prime.

It is a super-2 number, since 2×51267263² = 5256664511022338, 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 (51261263) 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, 1349120 + ... + 1349157.

It is an arithmetic number, because the mean of its divisors is an integer number (13491390).

Almost surely, 2^51267263 is an apocalyptic number.

51267263 is a deficient number, since it is larger than the sum of its proper divisors (2698297).

51267263 is a wasteful number, since it uses less digits than its factorization.

51267263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698296.

The product of its digits is 15120, while the sum is 32.

The square root of 51267263 is about 7160.1161303431. The cubic root of 51267263 is about 371.4896434446.

The spelling of 51267263 in words is "fifty-one million, two hundred sixty-seven thousand, two hundred sixty-three".