51642060 has 24 divisors (see below), whose sum is σ = 144597936. Its totient is φ = 13771200.

The previous prime is 51642043. The next prime is 51642067. The reversal of 51642060 is 6024615.

It is a super-2 number, since 2×51642060² = 5333804722087200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51642060.

It is not an unprimeable number, because it can be changed into a prime (51642067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430291 + ... + 430410.

It is an arithmetic number, because the mean of its divisors is an integer number (6024914).

Almost surely, 2^51642060 is an apocalyptic number.

It is an amenable number.

51642060 is an abundant number, since it is smaller than the sum of its proper divisors (92955876).

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

51642060 is a wasteful number, since it uses less digits than its factorization.

51642060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860713 (or 860711 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51642060 is about 7186.2410201718. The cubic root of 51642060 is about 372.3927231883.

Adding to 51642060 its reverse (6024615), we get a palindrome (57666675).

The spelling of 51642060 in words is "fifty-one million, six hundred forty-two thousand, sixty".