51420426 has 16 divisors (see below), whose sum is σ = 103226400. Its totient is φ = 17075888.

The previous prime is 51420419. The next prime is 51420443. The reversal of 51420426 is 62402415.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51420396 and 51420405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14316 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (6451650).

Almost surely, 2^51420426 is an apocalyptic number.

51420426 is an abundant number, since it is smaller than the sum of its proper divisors (51805974).

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

51420426 is a wasteful number, since it uses less digits than its factorization.

51420426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32133.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51420426 is about 7170.8037206439. The cubic root of 51420426 is about 371.8592223704.

The spelling of 51420426 in words is "fifty-one million, four hundred twenty thousand, four hundred twenty-six".