51641142 has 32 divisors (see below), whose sum is σ = 118713600. Its totient is φ = 14670048.

The previous prime is 51641137. The next prime is 51641143. The reversal of 51641142 is 24114615.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51641143) 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, 4084 + ... + 10952.

It is an arithmetic number, because the mean of its divisors is an integer number (3709800).

Almost surely, 2^51641142 is an apocalyptic number.

51641142 is an abundant number, since it is smaller than the sum of its proper divisors (67072458).

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

51641142 is a wasteful number, since it uses less digits than its factorization.

51641142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060.

The product of its digits is 960, while the sum is 24.

The square root of 51641142 is about 7186.1771478304. The cubic root of 51641142 is about 372.3905165984.

Adding to 51641142 its reverse (24114615), we get a palindrome (75755757).

The spelling of 51641142 in words is "fifty-one million, six hundred forty-one thousand, one hundred forty-two".