51965914 has 64 divisors (see below), whose sum is σ = 106106112. Its totient is φ = 18432000.

The previous prime is 51965899. The next prime is 51965929. The reversal of 51965914 is 41956915.

It is an interprime number because it is at equal distance from previous prime (51965899) and next prime (51965929).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202074 + ... + 202330.

It is an arithmetic number, because the mean of its divisors is an integer number (1657908).

It is a vampire number, since it can be written as 5654 ⋅ 9191 (with its own digits).

Almost surely, 2^51965914 is an apocalyptic number.

51965914 is an abundant number, since it is smaller than the sum of its proper divisors (54140198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51965914 is a wasteful number, since it uses less digits than its factorization.

51965914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 48600, while the sum is 40.

The square root of 51965914 is about 7208.7387246314. The cubic root of 51965914 is about 373.1695424866.

The spelling of 51965914 in words is "fifty-one million, nine hundred sixty-five thousand, nine hundred fourteen".