51026642 has 8 divisors (see below), whose sum is σ = 76585932. Its totient is φ = 25498000.

The previous prime is 51026641. The next prime is 51026671. The reversal of 51026642 is 24662015.

It can be written as a sum of positive squares in 2 ways, for example, as 50993881 + 32761 = 7141^2 + 181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51026641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2909 + ... + 10512.

Almost surely, 2^51026642 is an apocalyptic number.

51026642 is a deficient number, since it is larger than the sum of its proper divisors (25559290).

51026642 is a wasteful number, since it uses less digits than its factorization.

51026642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15324.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 51026642 is about 7143.2934981002. The cubic root of 51026642 is about 370.9075408396.

Adding to 51026642 its reverse (24662015), we get a palindrome (75688657).

The spelling of 51026642 in words is "fifty-one million, twenty-six thousand, six hundred forty-two".