51945267 has 16 divisors (see below), whose sum is σ = 76595328. Its totient is φ = 31049280.

The previous prime is 51945241. The next prime is 51945281. The reversal of 51945267 is 76254915.

It is not a de Polignac number, because 51945267 - 2¹¹ = 51943219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51945767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8373 + ... + 13190.

It is an arithmetic number, because the mean of its divisors is an integer number (4787208).

Almost surely, 2^51945267 is an apocalyptic number.

51945267 is a deficient number, since it is larger than the sum of its proper divisors (24650061).

51945267 is a wasteful number, since it uses less digits than its factorization.

51945267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21650.

The product of its digits is 75600, while the sum is 39.

The square root of 51945267 is about 7207.3065010446. The cubic root of 51945267 is about 373.1201135976.

The spelling of 51945267 in words is "fifty-one million, nine hundred forty-five thousand, two hundred sixty-seven".