51681162 has 32 divisors (see below), whose sum is σ = 111928320. Its totient is φ = 15814080.

The previous prime is 51681127. The next prime is 51681167. The reversal of 51681162 is 26118615.

It is not an unprimeable number, because it can be changed into a prime (51681167) 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, 13164 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (3497760).

Almost surely, 2^51681162 is an apocalyptic number.

51681162 is an abundant number, since it is smaller than the sum of its proper divisors (60247158).

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

51681162 is a wasteful number, since it uses less digits than its factorization.

51681162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678.

The product of its digits is 2880, while the sum is 30.

The square root of 51681162 is about 7188.9611210522. The cubic root of 51681162 is about 372.4866881119.

Adding to 51681162 its reverse (26118615), we get a palindrome (77799777).

The spelling of 51681162 in words is "fifty-one million, six hundred eighty-one thousand, one hundred sixty-two".