51421606 has 8 divisors (see below), whose sum is σ = 80486064. Its totient is φ = 24592920.

The previous prime is 51421603. The next prime is 51421609. The reversal of 51421606 is 60612415.

It is an interprime number because it is at equal distance from previous prime (51421603) and next prime (51421609).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421603) 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, 558885 + ... + 558976.

It is an arithmetic number, because the mean of its divisors is an integer number (10060758).

Almost surely, 2^51421606 is an apocalyptic number.

51421606 is a deficient number, since it is larger than the sum of its proper divisors (29064458).

51421606 is a wasteful number, since it uses less digits than its factorization.

51421606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117886.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51421606 is about 7170.8859982571. The cubic root of 51421606 is about 371.8620668336.

The spelling of 51421606 in words is "fifty-one million, four hundred twenty-one thousand, six hundred six".